I've used Pyrex for years (and even collect the vintage!) and as much as I love modern Pyrex, I often take issue with the lids.  Let me tell you, the lids on these are spot-on.  They're glass with quite the sturdy seal and haven't warped or cracked when I've washed them or put them in the microwave.  The containers themselves also perform quite well and present very nicely.  The white on the lids is a very nice touch and this I imagine would be a nice wedding registry or new apartment gift, for example.