Your question might belong to Credit Card Programs. Am I wrong?

Here's Gary's updated thread:
http://www.flyertalk.com/forum/showthread.php?t=399456

This issue has been discussed numerous times in different forum, given more credit card companies are imposing the extra 1% and/or 2% conversion rate to non-US charges. I think Gary does a wonderful job hunting for those mile-earning creditcard offers. I believe in the credit card section, he also covers cards he recommends for non-US charges.

I also read discussion that covers charges imposed by different credit card companies in the credit card programs forum. Browsing those threads might give you some pointers. Unfortunately I can't provide you with more threads while the search function is down.

http://www.flyertalk.com/forum/showthread.php?t=362399

MBNA seems to be the winner?!