The Buffet at the Wynn does not have the highest number of selections.  Which is great, because pretty much everything they serve is really good.  It's a buffet, so how much can you really eat.  I much rather just eat a few really good dishes than a bunch of mediocre dishes.  My favorite dish by far was the Kalbi Flank Steak, it had the kalbi flavor I like in korean short ribs, but in a really tender steak.  I would pay top dollar at a high end restaurant just for that flank steak.  Overall, for buffets, I think the Wynn and Wicked Spoon are the top 2 places in Vegas right now.