Still my pick for the best quality buffet in Las Vegas, though I have yet to try the buffet at Wynn's. In my most recent visit, we went on a Sunday night - $30 and about a 15 minute wait. Not too bad overall.
Here's why I like this place - great selection and good quality. Cheeses, several varieties of sushi, decent salad bar, large selection of desserts. Several meat options including kobe beef.
Downsides include a few mediocre offerings (stuffing was served in a disk shape and had a hockey puck texture to it - though my brother said gravy helped it a lot). The buffet area is a little cramped and is easily congested.
Try it - you should leave pretty full and happy.