Have stayed in:
The Luxor, Treasure Island, The Monte Carlo, New York New York over the years.
Others worth checking out, Excalibar, Mandelay Bay, MGM Grand, Alladin, Wynn, Ceasars Palace & The Bellagio.
Would suggest you sign up to online newsletters from some of the bigger hotels. They give special web only rates when you sign up.
Would have no problem in recommending any of the larger hotels. Always fancied the Venetian but normally a lot more expensive. Vegas is the sort of place where good hotel rooms are cheap (compared to here) but you only use them for sleeping.
We were there a month ago. Stayed in the NYNY but I spent most of my time in the MGM Grand due to the fact it had a poker room.
Enjoy.