I was Diamond with Hilton a few years ago and requested to get a match and they made me Gold and gave me a challenge of something like 20 days in 3 months for Platnimum, which I easily made. I have been Platnimum with Marriott since then and enjoy it better than ever. With their roll over nights (assuming it stays forever), I will not have a problem making it for the next 3 years if I split with other chains, but I probably won't.

I see alot of posts about devaluing points and stuff, but I still think it is better than I ever had with Hilton, especially with all of the Megabonus promotions.