I have used Voicestream/T-mobile for over 3 years now in Washington State and I love it. Great reception, cool phones, and, IMO, the best customer service out there. Longest time on hold during normal time, 30 seconds. I once had to wait over 5 min, but that was when the east coast was hit by a hurricane and they had alot of service outages over there. I heard and continue to hear too many bad stories about cingular, AT&T (now one big happy family) and especially Sprint. I just stayed away from verizon cause I hated the commercials 🙂
-spike