I play at CET (Harrah's & Caesars AC + LAS VEGAS), I'm 7*, so all my rooms are comped + NO TAXES. Through lots of AC promos, lately I've gotten over $500 in food credit + every two weeks $70 + lots of gift cards--IMHO better than gifts I can't use.
At Borgata I'm Black Label, through my slot host I normally get a Fiore Suite even on weekends. I've NEVER gotten food offers directly, but I have lots of COMP dollars for that. Once MLIFE kicks in, I'm assuming my play will count toward offers in LAS VEGAS.
As far as winning (and losing) I've done as well at Borgata ass the CET and Mlife casinos--If you are at the right machne at the right time you wil WIN<g>