I generally prefer MGM and don't think you can go wrong at their hotels. I consider Delano to be the best value on the strip, and I actually just stayed there again a few weeks ago. Great property and hotel and closest to Allegiant. My only issue with it is location because its so far from the heart of the strip and that's why I'm not staying there for the game.
If you want something more luxurious, Bellagio, Aria and Cosmopolitan all have much different vibes than each other and are great hotels/resorts. MGM Grand, Park and Mandalay/Delano are a little bit below them, but also have a ton to offer.
NYNY, Excalibur and Luxor are all great for families and a little easier on the wallet.