East Coast USA GSM Provider

[Jimmy McMillan]

My Neo will be in sometime today, and I was wanting to here from some 
others regarding a service plan I should use.  I've been told in 
#openmoko that AT&T's SIM Cards are having problems and that T-Mobile's 
pre-paid service doesn't allow data transfers. 

I'm right outside of Philadelphia, and was wondering if anyone around 
the area has an opinion of this matter.  Anyone in the US as well.