I realized I never updated this.
I settled on T-Mobile in the end. The Sprint phone was a PoS. I think my original T-Mobile phone was a lemon, because this phone has great service everywhere (including areas I didn't have service with Cingular in).
I ended up with
this bundle.
And KB - the 30 day buyers remorse period is a CA (may be nation wide) thing with all cell phone carriers.