LA fitness would be my suggestion, as long as you don't plan on going during the 4-8pm window strictly to get in a serious workout, since it's really packed during those hours. it's a great place to go though, plenty of really cool people there, lots of people to play basketball with, and the pool and sauna are always good after a workout(avoid the jacuzzi, fat old dudes tend to congregate there and read novels while they piss in the water)