[Jesse Buck]

Go ahead and unlock, you do not have to go back to 6.1. Unlocking just allows the ability to flash custom roms. If you want a 2.5 rom I suggest going to the CDMA TP2 Upgrades section located at the top of the TP2 section. Look at the end of the rom's thread and see how many issues people are having. If you want stability I'd shy away from them. Wait a couple few days and all the chefs will be releasing a 2.5 rom based off of the new Sprint rom. Lastly, search and read. Really it's the only answer anyone can provide.