We use Sprint. Our service is great all over, except on the lakefront, in the Pines (spotty), and headed north on 12 towards NB. I think they also offer the most cost-effective unlimited data & voice plans out there.
This is what I found on their
site for MC coverage:
QUOTE
Simply Everything SM
Everything your phone, PDA or smartphone can do nationwide - unlimited text, surf, email, listen, watch, find and of course, talk - on one simple plan.
This plan includes
* Unlimited data: Web surfing, email, BlackBerry Internet Services (BIS), GPS Navigation, Music Premier, TV Premier, NFL Mobile Live, NASCAR Sprint Cup MobileSM
* Unlimited Direct Connect: Direct Connect and Group Connect (for capable phones)
* Unlimited messaging: Text, pictures and video
* Unlimited talk: Unlimited anytime minutes, nationwide long distance and no roaming charges
* More about what's included in this plan
Unlimited $99.99