Anybody else sign up for the Asiana Amex Card by Bank of America?

I had the Asiana Visa by Bank of America for a couple of years but switched to the Starwood AMEX since you get the starwood bonus so it was 1.25 miles per $1. The new Asiana Amex give 2 miles per $1. It does have a $99 annual fee which is annoying but they do give an yearly $100 rebate on a plane ticket which evens it out if you fly Asiana once a year. Also, the 10,000 mile certificate once a year is a nice feature, too bad, you can't keep the miles, the cert can only be used to redeem miles and you lose it, if you don't use it. I got a 50K limit on the card and plan to make it my main card.

The only concern I have which nobody could answer is the Warranty Manager. For regular Amex cards, if you cancel the card, as long as you have another AMEX with the extended warranty, whatever you bought on the card keeps the extended warranty. Since this Amex is through BofA, both BofA and Amex didn't know what happens if I cancel the Asiana Amex. Not sure yet if I'm going to keep a card for a long time especially one with a $99 annual fee unless I really use it a lot. What can I say, I'm a frugal-cheap guy.

Alex