Took the GMAT today and am thrilled with my score. I'd taken 4 MGMAT practice tests and scored 30 pts higher than my best practice score. So glad to have it behind me.
In case anyone is reading this and hasn't taken it yet - the 8 minute breaks go by VERY quickly. I went to the restroom, ate a granola bar and had a few sips of water between sections, and I was still about 30 seconds over the 8 minute time limit both times. The ladies restroom was directly across the hall too - guys have to walk down the hall. So just be prepared for that - don't dilly dally!