Carrier and Bryant are made on the same assembly line, just different cosmetics. The Carrier dealer could get the variable speed blower for you I'm sure. Depending on what utility company you have there are some rebates through them. Usually ECM blower is $150 rebate and that makes it more than worth it in my opinion.
We have sold Bryant for years and have had very little trouble with it. They have a good wholesaler backing it also, that counts for alot.