Settabello near the Green Valley Ranch is the best pizza in Las Vegas
Bachi Burger is great if your into different burgers (toppings and the burger itself)
Lotas of Siam great Thai food
Hash House a Gogo is always great for breakfast (BIGGG Portions)
You also can't go wrong at the Peppermill for breakfast

I would avoid The FireFly (they have had several health code violations including getting 250+ people sick lasty year)

Check before you try some of those restaurants on the list. I know of a couple that are closed off the top of my head.

I hope this helps