I love Vegas and go a lot. I tend to eat at the same places lately, given how much I love them:
N9NE, PRIME and MON AMI GABI for steaks, etc
ALEX for the high priced dinner
CIRCO I also love, have had two amazing meals there.
And of course, the best restaurant ever is now closed, COMMANDER'S PALACE
I've also done China Grill, Auroele, Nob Hill, Delmonico's, Craft, Wolfgang Puck Cafe (great place to sit at the bar and eat), Bradley Ogden...
I am headed to Vegas again in June and want to branch out. Maybe some of the newer choices? I'd love to avoid MGM, I am not fond of it, but will certainly go if something is worth it