The ones I remember staying at, off the top of my head, are BCR, BW, Poly, WL, POFQ, POP, and AsMovies.
I really enjoyed all of them. I don't have a least favorite of any of them. They all have different themes and different experiences and I know I would stay at any of them again.
Couple of weeks ago we were at the POP, 60 bldg pool side. We were right at the pool, so we could hear the kids swimming at night. But, after a full day of park power walking, it really didn't matter if there was a herd of elephants. I would have had no problems sleeping. And most of the time, I fell asleep watching the top 7 things to do in WDW (is the hostess Eisner's daughter?)
I have found the CM's at the value resorts to be more friendly and outgoing.
I think you have to look at each resort by itself. If you pay $74 a night for your room, you can expect it to be less of a room than one that goes for $200+ a night. Seeing that we are in the room for a total of up to 8 hours a day, and most of that time is sleeping, I get the same satisfaction from a value resort that I do from the delux resorts.
But that's just me, personal tastes differ