What's in your wallet?

You probably recognize that line from CapitalOne credit cards. The question here is what are you using to make credit card charges and why. When I open up my George Constanza-esque thick wallet, I find a lot of cards - including the following:

1. A Starwood Amex card - which I try to charge as much as I can on under normal circumstances since I can either use the SPG points or convert them to AA for the trips to South America a la Alan Stanwyck (sans the private stunt flying jet).

2. Platinum Amex - Card gets me into the AA, CO and DL lounges, and when I want to top up some Amex Member Rewards points, this is the card I use. I also use it for car rentals to avoid the extra insurance

3. American Airlines Master Charge - used to be a great card when they allowed you to book reward travel for fewer miles, but that benefit has been reduced significantly. However, if you shop Sam's Club like I do, this is a great card for Sam's Club spend. Additionally, this is the card I have registered for the iDine AA program.

4. British Airways Visa - my current card of choice, since they have a 100,000 mile signup/spend bonus and you get a 2 for 1 cert for use on rewards travel after $30K of spend in a calendar year.

Sure, it's a hassle keeping track of these, but it's worth it in the long run.