For those of you who frequent Vegas, can I ask your opinion?

What are our best options for eating on the cheap? Vegas used to be the cheap food capital of the world, now everything seems to be high buck. I’m going next week w/ some friends and last time we went food was still really cheap everywhere. But my friends have been more recently and last time they went, food was pricey everywhere and they just ate at Denny’s ever meal. I have Denny’s where I live and I don’t eat there NOW. Don’t get me wrong, I like my moons over my hammy as much as the next guy, but a 3 night trip, I’m thinking is a one Denny’s max for me. I don’t mind buffet fare, but it sounds like anything you don’t want to pay $25 a person for is iffy. Of course, I’m reading this in travel guides, I find the quality of say Old Country Buffet to be sufficient, so I’m thinking I might not be AS picky as those who write the travel guides. I’m also OK with deli food/sandwiches/pizza/greasy spoons/bar food…anything cheap. I’d like to keep every meal under $15 a head or at least reasonably close, and I’m more than happy to maybe eat one big meal a day and snack the rest of the day, and/or eat at off hours so I don’t have to wait an hour for a table or what not. Just curious for those of you who have been a few times, for four people who would rather spend their money on something other than food, who will be plenty flexible as long as the food is edible, what might be some good suggestions.