Priority Club is nice. It was somewhat forced on me due to travel locations but I have come to love it after 4 years and stay with it after a complete change of travel habits, all is out of pocket now.

YTD I have stayed 15 nights, 9 paid and 6 award. Total out of pocket including taxes is $940 or $64 per night. Free internet at all locations, free breakfast of some sort on all stays, 3 room suite upgrades, and many free drinks. I also don't play the (un)targeted promotions to the extent most do so it has the potential to be more lucrative.

If my travels were more urban and/or I wasn't personally footing the bill, SPG with their branded Amex is very appealing.

I will defer to others on the pros and cons of the other programs.