I prefer to keep my DRM keys and bravia engine. I do not recommended unlocking it as it is usually the cause of hard brick if you do not follow certain steps correctly.
I am back. Ignore forum signature 1st line.
AndroidNoob69's PHONE SETUP
Rooted, CWM Installed, Honami MoonWalker 5 FTW!, Locked Bootloader(unlocking Jan-Feb 2014)
Slowing down now
Loves the Q&A Section
Neo V, Rooted NOW!, No CWM, Stock, Locked Bootloader, Slow, No SD Card
Very good phone
Hit 'Thanks' if I helped you