I have a Treo 680 with service from AT&T. I have great service, and cannot remember the last call that was dropped. I have some dead spots inside my house, but its not a big issue for me. I have used my phone while traveling in a tunnel, in an elevator, and other previously difficult areas.
I'm with Verizon and am ready to ditch my old LG and upgrade to a new phone. My most important criteria is that the phone gets good reception i.e. can make/receive calls in areas where other phones have trouble.
I've heard that Motorola is the best in this respect. True?