This post helped me a lot. Made an account especially to post my experience. Alas it's not a very positive one. Just gave the gre yesterday and these were my practice scores. I had read somewhere that you should leave all your practice tests till the last few days of prep. And that is what I did. So my first test starts from 6 days before the test till the final day.
Day 1: Q-164 V-152. 316. ETS-1(satisfied with want but not with verbal)
Day 2:Q-168 V-157. 325. kaplan(very happy with quant and satisfied with verbal-but read everywhere that the Kaplan test was easy so didn't get my hopes up too high)
Day 3: Q-159 V-158. 317. Manhattan prep(shocked and disappointed by quant but satisfied with verbal)
Day 4: Q-161 V-151. 312. ETS-2(the lowest combined score so was a little disappointed)
Day 5: Q-161 V-158. 319. Manhattan prep(got higher than the previous day so felt better but not happy with my quant score)
Day 6:Was very tensed about math because I'm applying to engineering programs. And my target was around 164. So thought would only concentrate on math for the next 2 days.
Q-164 Princeton review
Day 7- Q-159 Manhattan prep( but know that Manhattan quant is pretty hard so wasn't too disappointed)
Actual gre: Q-158!!! V-157
Was very angry with my math score. I got less than even the Manhattan prep tests. The first section I got was quant but was weirdly difficult and not expected for the first section. The second and third sections of quant were much easier. And the programs I am applying to will definitely not accept this quant score. So writing it again after my semester exams :/.
