Cingular VS T mobile
1. Larger coverage area.
2. Larger M2M customer base.
3. Rollover.
4. HSDPA being deployed as we speak.
5. Phone exclusives from Moto (RAZR+variants) and SE (S710 and Z500)
6. Broader international coverage (yes, even broader than T-Mobile's) in 170 countries.
7. I like orange, not pink.
T-Mobile is better in the sense of price (but not by much), their service is awesome whre you can get it, and the Sidekick II is an amazing device, but I'm gonna go with Cingular overall.