From personal experience of touring the value resorts... I think ASsp is the best when it comes to theme execution! The buildings have truly amazing details to each sport... and they keep it "clean" and "simple" without going too over the top!
You'll read a lot of reports regarding the "worn" look of the resort, and even the potential dirty appearance at times. Don't feel uneasy though, just read some recent reports regarding the deluxes and mods and you'll see a trend developing (shame on disney for there poor maintence these days)
I really like the overall layout of the resort as I don't think there is a "truly" bad location when it comes to walking (especially compared to ASmu). The pools are perfectly themed and so fitting... very top notch in my book! The food court is just that, a disney food court, and I found offerings to be decent and plentiful. Since it is "first" on the AS bus route (when the AS do share buses) it can give you that extra advantage.
The resort is about to undergo a room renovation (similar to what you can find over at ASmu) which I think will really help give the resort that extra boost! The rooms are your typical "value" rooms, but I found nothing wrong with them, with exception to what others have said, just worn and at times dirty appearances. I do expect that though from an aged room thats occupied 98% of the year.
The resort can be home to several large sports and other groups at times as well. I guess in those situations, it's really whether or not you want to make the best of it! I always check the WWoS website and calender of events to see what I can expect that week for sporting events.
I've never had an issue at a value resort, found transportation to be fine, food to be great, and people and CMs to be pleasant. ASsp was one of my choices for our September trip, but the pool closure changed my decision. With the renovation, I'll be definately staying there in the near future!
My bf is VERY interested in staying there... he loves the baseball section and wants to travel during Spring Break Training and stay there. Thats probably our favorate area of the resort just for the proximity to the pool and overall design. It can be a nice walk to the main building, but close to the bus stops if you take the short cut on the outside of building 10.