I am selling my Blackberry Storm that I bought and unlocked. I then tweaked it to work with ATT and have had no issues with it. I just perfer my BOLD and a keyboard.
The device is only 30 days old....and used it for about 2 weeks...I can program it to work on T-Mo network as well.....
I bought it new for $600 ( no contract ) and hacked it....but will sell it for $450 and program it to work on ATT or T-mo....your choice