How about the Powerprep tests from ETS, I was having trouble with my scores, since I continuously had 158-160 in verbal and 160+ in quant. I felt my scores were a little inflated, considering I keep hearing how 310 or a 320 is a very good score. I did not feel confident at all in the verbal section, so I guessed my practice tests were easier than the actual GRE.
I then took a powerprep test and scored 328, 168 in quant., and 160 in verbal, and that has been my highest score as of yet. I wonder if the powerprep scores are inflated as well. Any advice, have you scored similar to your practice tests in power prep, or higher or lower??