Like it. The Silverton has a really good buffet. It's not "fabulous you must try this dish" kind of good but it's Las Vegas buffet good. As far as local casinos go, I'd say it's above average. Definitely better than the coast and most station buffets.
Last time I went was on Friday for their seafood buffet. I ate crab legs, peel and eat shrimp, oysters rockefeller and a decent paella. The crab legs were a little overcooked and hard to crack. They are precut which is supposed to make them easier to crack but the shell was a bit rubbery so they were kind of pain to deal with. When I did get to the meat it was not overly salty which I really like. Lots of buffet crab legs (and buffet food in general) is too salty for my taste.
This Silverton runs some good promotions periodically and Friday night we bought 2 buffets for the price of 1. It was $25 before tip. We arrived around 6:30ish and there was no waiting but there was a decent line when we were leaving. The service was pretty standard. Our waiter brought us drinks, extra napkins and cleared our plates. Which is important to me. When I am finished eating I want my plate out of my face, now. (Always in a nice way though ;)