Mmmmmmm, this was my first visit to the M Resort Buffet, and probably won't be my last. It helped that it's really close to my work, so their lunch buffet will probably be the only one I do.
At $15 for lunch, it was not a bad deal for all the food and options you get. Everything seemed to be quality food. If you go, request a seat near the window. You'll have an expansive view of the Las Vegas Skyline. Something I've never experienced at a buffet before.