Have you considered satellite broadband? I've heard good and bad things about it, just like everything else, but if you can put a dish on the roof with southern access, you should be OK.
T-1 seems like overkill unless you have a large network with alot of employees on the internet constantly. Or you host your own web server with alot of traffic. If you choose the T-1 option, does anyone in your area offer shared T-1 access? That way you basically split the cost and still get the benefit of the huge bandwidth of a T-1. It's a little more complicated than that, but I'm sure you get the idea.