Palazzo.
Just got back from a 2 night trip. Easy check-in. I was given a "view" upgrade, which was located on the 46 floor. Booked an express massage (25 minutes) for $105 and credited w/out any problem. Even though I was traveling solo, I was given a ~$64 credit for breakfast.
Wynn Tower rooms are still my favorite in Vegas, but the Palazzo was great experience.