I have 2 US Airways Mastercards and 1 US Airways Bank of America card, and I'd like to get another (for the 10,000 Preferred miles after meeting the required spending level on each). I see that BofA has discontinued its US Airways credit cards, so it'll be a Mastercard.

Has anyone run into issues with being approved for yet another of these credit cards after having already obtained several of them? Is there a risk that applying for yet another one would backfire, with the bank canceling an existing one instead?

I've just had so many negative experiences with AmEx that I'm wary of credit card companies in general.

Thanks.