I've read so many threads in this forum over the past several years that have helped me, but I'm not quite sure why I never decided to become a member until now. With that being said, I hope this question is not of poor taste or is not in the wrong forum. Here goes.

I travel often for work and rack up credit card, hotel and airline points, but all separately. I am sure there is a better program, maybe one that is consolidated, maybe not, but I do not feel that I am getting my best bang for my bucks. Here is my current situation:

Airline - US Airways Silver Preferred (I live in Philly)
Credit Card - American Express Platinum
Hotel - Mostly use Hotels.com
Rental Car - Various, though I am enrolled in Avis, Enterprise and National

I suppose that the only anchor for me is US Airways since I always fly out of Philly. I could be wrong, but I really don't think the Amex card is worth the $400...maybe it is and I'm not taking advantage of it? I am wondering if anyone can recommend a credit card program or something else that would better suit me.

FYI - I put about $50,000 a year on the Amex, both for work expenses and personal.

Thanks in advance for your advice!