Carrier? What's that?
eVGA is known for good customer service - for US customers, at least.
As far as I know, Sapphire only makes AMD-based graphics cards.
If you're specifically looking for a 690, I'm not sure that all of these makers have them. The market for $1000 graphics cards appears to be limited. (www.newegg.com
has no 690s in stock at the moment, from any maker. There are a few at amazon.)