Westgate--If you are talking about the Westgate Vacation Villas--never in a million years. I know some folks have not had any problems but a year later my three year old still refers to this as the "stinky Florida house." Enough said. That and the fact that they were going to test the smoke detectors and didn't bother to warn the guests.
Vistana Resort--this place is the love of my heart! There is so much to do there that my DH wants to go to FL for two weeks--one to be spent at Vistana and one for WDW. I think that they have three bedroom lock offs or you could go with two two bedroom units and request to be situated right near each other. The nice thing about the lockoffs is that you would have a totally separate living space to play games, chat watch movies after the kids go to bed without worrying about noise level. At this resort there are 7 pools many of which have fountains, slides etc. There are fabulous walking paths, 3 onsite restaurants, the cutest little general store etc. You can also rent surrey bikes to tool around in and they have several game room, workout areas etc. There is also a great kids' program with fun activities as well as some grown up activities planned too.
Cypress Pointe--have not stayed in the Grand Villas but have been in a two BR in the other part of the resort. These are nice and again you have the two bedroom with the lockoff for the third. Don't know about the size of the second BR in the Grand Villlas but in the resort side it is pretty small. Decent pools, but not nearly as much to do as at Vistana. However, you can often find it for cheaper at sites like Hotel Kingdom and the like.
Both of these resorts had clean pools, common rooms and villas--spotless really. Great in room amenties for both as well--VCRs, stereos, large screen tvs and really well equipped kitchens. My kids are two, three, and seven and were perfectly content with the pools and playground at Cypress Pointe, but were really awed with the grounds at Vistana. (In remembering, I did not let my kids go in the kiddie pool at OP because it looked grungy.) Vistana has a couple of very shallow entry pools which was especially nice when the two year old was still one so we didn't have to hold him the whole time. (Oh, pools at Westgate, at least the ones by us, were ucky.
Have not stayed at any of the others. Good luck! Do you know about Sky Auction?