just a personal opinion here, but you will be taking a step down with both Starwood and Hilton.

Starwood has no blackouts but thats about it but they will nickel and dime you to death, and you may get a concierge club access card but its not guarenteed, and NO breakfast

Hyatt, is great but the upgrades to suites for their top level are far and few between and forget about it for their mid level. Also they are closing Regency club rooms as fast as they can. You wouldn't qualify for this benefit anyway. No breakfast either

Stick with Hilton, its the best of the three as far as upgrades, points, bonus', breakfast and club access