Here are some benchmarks and discussion of data compression specialists: http://encode.ru/threads/2313-Brotli?p=44970&viewfull=1#post...

"Input:
812,392,384 bytes, HTML top 10k Alexa crawled (8,998 with HTML response)

Output:
219,591,148 bytes, 1.799 sec., 1.355 sec., tor-small -1

218,018,012 bytes, 1.951 sec., 1.464 sec., tor-small -1 -b800mb

210,647,258 bytes, 1.736 sec., 1.328 sec., qpress64 -L1T1

210,194,996 bytes, 0.333 sec., 0.371 sec., lz4 -1

194,233,793 bytes, 2.818 sec., 1.348 sec., qpress64 -L2T1

187,766,706 bytes, 7.966 sec., 1.059 sec., qpress64 -L3T1

173,904,470 bytes, 2.995 sec., 2.721 sec., tor-small -2

173,418,150 bytes, 3.132 sec., 2.843 sec., tor-small -2
-b800mb

169,476,113 bytes, 2.072 sec., 0.352 sec., lz4 -9

165,571,040 bytes, 2.931 sec., 2.820 sec., NanoZip - f

158,213,503 bytes, 1.855 sec., 0.980 sec., zstd

154,673,082 bytes, 3.213 sec., 2.445 sec., tor-small -3

154,166,902 bytes, 3.364 sec., 2.555 sec., tor-small -3 -b800mb

152,477,067 bytes, 2.128 sec., 0.973 sec., lzturbo -30 -p1

152,477,067 bytes, 2.132 sec., 0.971 sec., lzturbo -30 -p1 -b4

150,773,269 bytes, 2.151 sec., 1.047 sec., lzturbo -30 -p1 -b16

150,219,553 bytes, 2.332 sec., 1.204 sec., lzturbo -30 -p1 -b800

149,670,044 bytes, 7.825 sec., 2.567 sec., WinRAR - 1

149,642,742 bytes, 2.069 sec., 0.646 sec., zhuff_beta -c0 -t1
145,770,266 bytes, 4.586 sec., 2.285 sec., tor-small -4

141,951,602 bytes, 4.484 sec., 2.360 sec., tor-small -4 -b800mb

141,215,050 bytes, 2,751 sec., 0.938 sec., lzturbo -31 -p1 -b4

140,657,806 bytes, 5.037 sec., 2.544 sec., FreeArc - 1

140,211,060 bytes, 6,970 sec., 1.775 sec., bro -q 1

138,103,483 bytes, 118.023 sec., 2.394 sec., cabarc -m LZX:15

138,051,401 bytes, 2.761 sec., 1.001 sec., lzturbo -31 -p1 -b16

137,564,310 bytes, 18.762 sec., 4.299 sec., NanoZip - dp

137,211,547 bytes, 7.808 sec., 1.712 sec., bro -q 2

137,000,208 bytes, 3.763 sec., 3.852 sec., NanoZip - F

136,523,335 bytes, 2.830 sec., 1.094 sec., lzturbo -31 -p1

136,445,854 bytes, 50.932 sec., 2.344 sec., lzhamtest_x64 -m0 -d24 -t0 -b

136,337,495 bytes, 14.823 sec., 4.259 sec., NanoZip - d

135,723,691 bytes, 8.318 sec., 1.677 sec., bro -q 3

135,656,476 bytes, 2.972 sec., 1.153 sec., lzturbo -31 -p1 -b800

135,315,388 bytes, 51.436 sec., 2.371 sec., lzhamtest_x64 -m0 -t0 -b

135,287,357 bytes, 51.937 sec., 2.418 sec., lzhamtest_x64 -m0 -d29 -t0 -b

135,071,576 bytes, 21.650 sec., 4.251 sec., NanoZip - dP

132,819,515 bytes, 20.102 sec., 6.278 sec., 7-Zip - 1

131,871,664 bytes, 14.052 sec., 0.899 sec., lzturbo -32 -p1 -b4

131,401,865 bytes, 9,917 sec., 1.677 sec., bro -q 4

129,184,341 bytes, 8.305 sec., 2.692 sec., tor-small -5

127,355,215 bytes, 20.866 sec., 5.825 sec., 7-Zip - 2

127,045,472 bytes, 9.549 sec., 0.957 sec., lzturbo -32 -p1 -b16

126,139,033 bytes, 8.025 sec., 2.751 sec., tor-small -5 -b800mb

125,732,647 bytes, 10.642 sec., 2.618 sec., tor-small -6

125,454,769 bytes, 140.513 sec., 2.281 sec., cabarc -m LZX:18

123,169,077 bytes, 8.472 sec., 1.090 sec., lzturbo -32 -p1

123,093,411 bytes, 22.468 sec., 5.508 sec., 7-Zip - 3

122,564,329 bytes, 10.074 sec., 2.680 sec., tor-small -6 -b800mb

122,480,456 bytes, 19.411 sec., 1.645 sec., bro -q 5

121,068,548 bytes, 14.536 sec., 3.289 sec., FreeArc - 2

120,653,755 bytes, 16.107 sec., 2.552 sec., tor-small -7

119,969,489 bytes, 27.663 sec., 1.602 sec., bro -q 6

119,740,393 bytes, 27.370 sec., 5.259 sec., 7-Zip - 4

118,343,545 bytes, 24.112 sec., 2.123 sec., WinRAR - 2

118,139,032 bytes, 35.361 sec., 4.371 sec., NanoZip - Dp

117,500,327 bytes, 15.517 sec., 2.594 sec., tor-small -7 -b800mb

117,388,039 bytes, 23.546 sec., 2.524 sec., tor-small -8

116,526,595 bytes, 37.847 sec., 4.383 sec., NanoZip - DP

116,454,906 bytes, 35.232 sec., 4.351 sec., NanoZip - D

116,269,246 bytes, 25.888 sec., 6.589 sec., FreeArc - 3

116,217,001 bytes, 40.748 sec., 1.630 sec., bro -q 7

115,993,125 bytes, 192.929 sec., 2.199 sec., cabarc -m LZX:21

115,985,847 bytes, 386.192 sec., 0.850 sec., lzturbo -39 -p1 -b4

115,729,606 bytes, 35.504 sec., 2.095 sec., WinRAR - 3

115,163,486 bytes, 55.523 sec., 1.614 sec., bro -q 8

115,022,074 bytes, 49.863 sec., 2.084 sec., WinRAR - 5

114,602,026 bytes, 8.403 sec., 1.218 sec., lzturbo -32 -p1 -b800

114,345,025 bytes, 78,418 sec., 1.594 sec., bro -q 9

114,281,170 bytes, 22.925 sec., 2.575 sec., tor-small -8 -b800mb

113,354,128 bytes, 29.519 sec., 2.474 sec., tor-small -9

112,376,531 bytes, 177.077 sec., 1.923 sec., lzhamtest_x64 -m1 -d24 -t0 -b

111,848,802 bytes, 29.046 sec., 2.515 sec., tor-small -9 -b800mb

110,532,234 bytes, 40.580 sec., 2.496 sec., tor-small -10

110,177,215 bytes, 54.632 sec., 6.398 sec., FreeArc - 4

109,908,468 bytes, 40.292 sec., 2.501 sec., tor-small -10 -b800mb

109,522,695 bytes, 208.748 sec., 1.898 sec., lzhamtest_x64 -m2 -d24 -t0 -b

109,425,530 bytes, 436.824 sec., 0.893 sec., lzturbo -39 -p1 -b16

108,520,934 bytes, 58.227 sec., 2.521 sec., tor-small -11

108,520,934 bytes, 58.329 sec., 2.518 sec., tor-small -11 -b800mb

107,850,398 bytes, 266.166 sec., 2.562 sec., tor-small -12

107,842,909 bytes, 267.559 sec., 2.550 sec., tor-small -12 -b800mb

106,128,420 bytes, 271.607 sec., 1.850 sec., lzhamtest_x64 -m3 -d24 -t0 -b

105,933,030 bytes, 571,280 sec., 5.168 sec., lzturbo -49 -p1 -b4

105,692,791 bytes, 193.962 sec., 1.919 sec., lzhamtest_x64 -m1 -t0 -b

104,539,771 bytes, 316.307 sec., 1.833 sec., lzhamtest_x64 -m4 -d24 -t0 -b

104,094,380 bytes, 2313.780 sec., 1.693 sec., bro -q 10

104,053,219 bytes, 195.503 sec., 1.977 sec., lzhamtest_x64 -m1 -d29 -t0 -b

102,895,078 bytes, 148.997 sec., 4.850 sec., 7-Zip - 5

101,941,653 bytes, 237.364 sec., 1.889 sec., lzhamtest_x64 -m2 -t0 -b

100,898,120 bytes, 534.627 sec., 1.097 sec., lzturbo -39 -p1

100,159,922 bytes, 239.813 sec., 1.933 sec., lzhamtest_x64 -m2 -d29 -t0 -b

99,699,129 bytes, 625.001 sec., 4.902 sec., lzturbo -49 -p1 -b16

96,239,572 bytes, 347.011 sec., 1.893 sec., lzhamtest_x64 -m3 -t0 -b

95,197,295 bytes, 236.139 sec., 4.587 sec., 7-Zip - 9

94,133,011 bytes, 356.440 sec., 1.933 sec., lzhamtest_x64 -m3 -d29 -t0 -b

93,601,386 bytes, 431.884 sec., 1.899 sec., lzhamtest_x64 -m4 -t0 -b

92,303,359 bytes, 727.475 sec., 4.729 sec., lzturbo -49 -p1

91,310,894 bytes, 449.102 sec., 1.923 sec., lzhamtest_x64 -m4 -d29 -t0 -b

90,239,627 bytes, 680.976 sec., 1.170 sec., lzturbo -39 -p1 -b800

87,715,022 bytes, 314.169 sec., 5.428 sec., FreeArc - 9

82,891,405 bytes, 882.513 sec., 4.597 sec., lzturbo -49 -p1 -b800

77,286,010 bytes, 6497.059 sec., 7.715 sec., glza

Used:
7z 15.07 beta - Sep 17, 2015 (one thread)

rar 5.40 beta 4 - Sep 21, 2015 (one thread)

arc 0.67 - Mar 15, 2014 (one thread)

nz 0.09 - Nov 4, 2011 (one thread)

zhuff_beta 0.99 - Aug 11, 2014

cabarc 6.2.9200.16521 - Feb 23, 2013

lz4 1.4 - Sep 17, 2013

qpress64 1.1 - Sep 23, 2010

zstd 0.0.1 - Jan 25, 2015

tor-small 0.4a - Jun 2, 2008

lzturbo 1.2 - Aug 11, 2014

lzhamtest_x64 1.x dev - Sept 25, 2015 (own VS2015 compile)

glza 0.3a - Jul 15, 2015
"

lzturbo seems essentially better, a few other happen to be better.