I want to stay somewhere new (to me) for my next trip. I'm looking at Bellagio, Venetian/Palazzo, Aria or Vdara. I know the Venetian/Palazzo has the Canyon Ranch spaclub but I'm wondering if it's worth the expense. I'm mostly looking for cardio (treadmill) and weights-both machines and free weights. Also, which of these would have the nicest pools? I will be solo, and the trip will most likely be the beginning of June.