Brad,
With cap one you can usually just call the toll free # on the back of the card and get a line increase via there automated system.
I got one of there cards about 6 years ago, they started me off at like 1500.00 or something, now it's up to 9k, which is actually still pretty small. Discover sent me a new card and it was 15k from the get go..
Cap one is ok, but there interest rates suck.. We have there business miles one card which is not bad and gives us some free trips.
Overall for Customer Service, biz, etc. Amex is the only way to go
