I think some interesting points have been brought up in regards to the actual "pool" quality in regards to swimming vs atmosphere, views, etc. I never really thought about it until someone mentioned their kids preferences and it made me think that although; I would most definitely rank SAB and the POLY as my top 2 WDW pools--I love them both! It is not for the great swimming experiences I get there, it is for the atmosphere. I go into the pool to cool off and that is it, the rest of the time I love to lay in the sun, with a good book and a drink. I just love the atmosphere at both SAB and the Poly mainly for the views and their great pool bars, lol. To me they are total vacation. However when I think back, to when my kids were young these were not their favorite pools because of the "swimming" ability these pools provided. They really did not like the feel of the sand at SAB or the hike to the slide and the Poly pool was too small and crowded for them to be able to really swim and have fun. Their favorites were CSR, BWV and many times the quiet pools at the resorts because they were not crowded and the kids could really swim and have fun.
It would be interesting to see how a poll of "best pool" with responses from kids would compare to one responded to by adults.