I've done quite a bit of detailed analysis for my own stay patterns. As a Plat with an MR Visa, I've found that Marriott offers the best total rewards - in part because every stay comes with a little slice of AA Lifetime elite status. With Marriott, I didn't just count nights vs. nights - I gave Marriott credit because of the good conversion rate to AA.

Sure, I could find other airlines in Marriott's list for future Travel Packages. But the best one is now gone.

And countering with a recommendation for Delta is just insulting. Give me a physical break. One DL mile isn't worth anything remotely near one AA mile. With AA gone, I'm most likely to redeem for WN one time - I can at least rent a few cars, hit 100 total credits, and have 12 free tickets...

After I top off the next one though, Starwood and Hyatt look more attractive.