</font><font color="blue" class="small">( I don't know how you'd find out which is best for your area, except by talking to friends and neighbors in the area )</font>
That and try them out. Most cell phone carriers have a trial period that you can drop them within that time without charge. Been there done it, twice.
In my area Cellular One has by far the best plans.... and the worst service.
I also tried Sprint a few years ago. My buddy, up from Pgh, had Sprint and it worked great. I got it locally and it stunk. I even tried different phones... weird. His was clear as a bell.
Verizon is pretty popular, but they didn't have as good a plan as Nextel, who I had had before, so that's who I use now, Nextel. I like the extra loud ringers their phones have, I've never lost a call, and last I knew they were the only ones with a true nationwide long distance, where you aren't limited to zones.
They all have good and bad points.