Lots of new promos at
www.mycheapvegas.com
The Luxor and Excalibur birthday ones look very interesting if it's around your birthday time and you like those properties.
The Buffet ones are pretty good too, looks like there aren't any limitations to the buffets and the Aria one is back open. Stay at Monte Carlo, go to the Aria Buffet!
I still think the entertainment offers are the best. 2 Tickets usually have over $150 value compared to buffet which is closer to $70.
Remember if you're going 4 nights or more and going with more than 1 person, you can book 2 nights for yourself, and 2 nights for the other person and combine the reservations at check in for double the bonuses!