Oops! I missed that bit on the first reply.

In my opinion, the three best buffets in Reno are:
1. Eldorado
2. Peppermill
3. Atlantis

The buffet at Harrah's is kind of "meh": It is neither particularly good nor remarkably bad. They do occasionally offer two-for-one specials though, at least at breakfast.

I have not eaten at the buffet at Silver Legacy since it was remodeled a few years ago, but it has garnered good reviews. It isn't open every day and is usually very crowded when it is open.

Grand Sierra also has a buffet, but I have never eaten there nor have I read any reviews of it.