Their going to be pretty much the exact samething. No reason to change it. You won't be able to get rid of the AT&T branding when you start up your device.
Posted from my CrackBerry at wapforums.crackberry.com
I just unlock a old Cingular BB 8800 and after the reboot I got this boot screen I thought you couldn't change the operator brand. Could this be a glitch or something? Sorry so blurry. It says LICENCED TO RESEARCH IN MOTION then it says ENGINEER USE ONLY.
When loading a different carrier OS
Be sure to delete the vendor.xml file from apploader before installation
Windows>
Program files>
Common files>
Research in motion