Blackberry Curve 8310/8320 Users...
 

AT&T > 8310 > GPS
T-Mobile > 8320 > Wi-Fi

Phones are pretty much identical except one offers GPS and one offers Wi-Fi.
I'm on AT&T but would prefer the Wi-Fi option.
Does anyone know if an unlocked 8320 running on AT&T is able to take advantage of the "hotspot @ home" feature which allows you to make free calls over your Wi-Fi connection, or is that restricted only to T-Mobile plans/service?

Thanks,