granted i'm a new cingular customer, but so far they have offered me only outstanding customer service, from working with me initially in the store on getting the phone number i wanted to helping me out on the phone with some gprs issues. the reps have all been very, very helpful. (true, cs closes at 9 pm nightly, and all day sunday. could be a distinct minus in the future.)

i'm personally familiar with all the So. Cal. carriers except Nextel. they're all perfectly adequate locally. nationally they're all pretty good too. i think it's all a matter of personal preferences. i wanted a gsm carrier with a large national footprint, cool phones, and i'll be the first to admit that rollover didn't hurt.