I'm also a Cosmopolitan (Vegas) Identity Member, a Tropicana (AC) TropCard Member, an Hard Rock (AC) Rock Royalty Member, & an Ocean Resort (AC) Member as well. However I don't merely restrict my play with just the Total Rewards &/or MLife Programs. I tend to like the Comps that each of these two particular Reward Programs offers me room comp offers, both free play & resort credit, as well as their few various promotions of sorts. (10 to 12.) from my home I can play at, when looking to play for a few short afternoon &/or evening hrs. Also, I have a local MGM/Mlife property located a few mins. Myself who likes to gamble in both AC & LV, I'm a member to both the CET/Total Rewards & the MGM/MLife Rewards Programs. I think the answer to your question is going to depend upon what type of Rewards Program benefits you yourself are specifically looking for, as well as the type of rooms being offered by each, based upon the level of gambling dollars invested.
