I'll use 900 when I'm goofying around and just looking for a challenge, but its pretty much worthless, because it wasn't designed for GT3 and of the deadzone others have already mentioned. Although in GTC, you can undercalibrate your wheel and it will recognize you calibration settings, UNLIKE GT3 where calibrate don't mean crap, so then for GTC you can unlock 900 degree mode and then calibrate your wheel to your desire full locking points.