Product review (3 stars): Large Size and Slow Filtration Not For Me
I'm not giving up my Brita system quite yet.  There are pros and cons to this system.  For me the cons outweigh the pros.  I could find filter performance data only in the Use and Care Guide...a primary reason for buying such systems.  The Guide reflects NSF certified testing indicating it reduces Chlorine taste and odor >/= 50%.  Non-NSF testing indicate it affects Chloramine "influent challenge concentration"  at 3mg/L +/-10%.  This system rightly warns against using it with water that is "microbiologically unsafe" or of unknown quality.  It is not meant to nor advertises to disinfect unsafe water.

Pros:

1.  Good build quality, in my opinion, despite what some say -- equal to Brita.

2.  Large pitcher with big round base which sits firmly on counter and takes up a good bit of space in fridge.

3.  Removable water filler bubble containing the filter so it can be removed and used with other containers, i.e., water mugs, coffee makers, etc.

4.  Very clear and precise instructions for installing and using the filter assembly.

5.  Water tastes equal to Brita filtered or other filtered water.

6.  Very clever and interesting concept and design of filter section.

Cons:

1.  Did not fill container anywhere close to rate advertised or shown in photos.  It filtered extremely slow.  I tried both tap and distilled bottled water.  In fact, it appears the photos on Amazon show water flowing into the unit without a filter to give the impression water flows at the same rate it comes out of the tap.  With filter installed, water trickled out of the filter.  It took me over five minutes to fill one gallon.  I had to stand at the sink and continually keep refilling the water filter bubble to feed the pitcher.  With Brita, I simply fill the top pre-filter section and put it back in the fridge.  Water then flows through the filter section into the pitcher without the need to continually refill.  For me, this is the biggest limitation of the unit I received.  I won't rule out that my filter might have been defective.  I followed installation instructions described in the Use and Care Guide so I don't think I somehow goofed up.

2.  The pitcher is too large at the base to fit into the side gallon bottle shelves of my fridge door.  I had to adjust regular shelves to make a large space for it.

3.  If not placed in the bottle correctly the water filter bubble section falls into the main pitcher section.

Summary:  Regrettably this pitcher is not for me.  If water filled at the rate advertised, I'd up my rating but I don't enjoy standing at the sink for five or ten minutes to fill the pitcher.  Additionally, the base of this round pitcher is just too large to fit in my gallon jug door shelf and I don't want to carve out space on the main shelves.  I'll keep my Brita pitcher for now.  If you can live with my issues this may work fine for you.