So before I start with all this increased travel spending, I want to do a review and see if there's perhaps a better credit card for me. Right now I have a CSP, it's come in handy for me in getting much better car rentals rates in NYC than I'd otherwise get, but other than that it's hard for me to get max value out of it since (at least so far) I don't have much need to do business with any of the CSP partners. Domestically I greatly prefer flying JetBlue or other non-legacy carriers, and particularly try to avoid United. That doesn't mean I have to stick with that preference if there are much better options to maximize my travel dollars, but if I can manage to do almost as well while sticking to JetBlue that would be great. I don't care about flying first class or having access to airport lounges.
So with that background, any suggestions on cards I should consider? I've typically only had one credit card at a time that I use for everything.