Bellagio reigns as the best buffet in Las Vegas with the Paris buffet a close second.  Wynn's buffet is not a good value.  Waiters were slow and overall food was inferior to Belligio's and Paris'.
I disagree with your rating of Wynn's buffet.It had many more food items than Paris, including a very good rack of lamb. I realize  the cost is quite high, but if you go  at 3:30 you will pay lunch prices and save quite a bit and be able to eat dinner at 4:00. also, the service was good. There are numerous buffets out there. Too many for me to say which one is better than the other. I would say that a buffet is the best way to get value for money for a good feed at lunch time. I wouldn't pay more than $15-20 as how much can you pile onyour plate at lunchtime realistically? Obviously some are better than others. Go down and have a look before parting with your cash.

Paris is not what it once was. RIO Carnival and Planet Hollwoood (PH)  for lunch/dinner are far better and the line-ups at peak times are much shorter.  RIO is immense with fresh food from virtually every corner of the world.  PH is a more compact version of RIO with a mid-east section (great kebabs) added.  PH also has warm crab-legs cut and served on the half-shell making it easier than breaking/hacking through the legs yourself.  RIO has a good selection of gellatos.  Both offer the warm chrerries that are a fav at PARIS. Both are bright with a modern decor.  On this last trip, FEB 2012, Paris seemed dark, the smaller chairs were uncomfortable and some food was replenished very slowly.