Wow. I am not exactly sure how i feel about the Wynn buffet, only because it kind of made me sad that there were so many great things to try and i didnt have the stomach capacity to make it happen :( This was my first Vegas buffet experience, so i dont exactly have a basis for comparison in that regard, but the Wynn buffet is hands down the best i have ever been to. The layout makes it manageable and not overwhelming to find what you want, and everything was very fresh and well stocked.
The service was quick and the dining area was very bright, open and inviting. I would be interested to try other buffets in town to be able to better compare this one, but the bar has been set VERY high after this experience.
Only drawback are that it's pretty pricey and the line to get in for brunch was very long. I wasn't exactly surprised by any of this, though.