Powerprep 1: 151V / 158Q
Powerprep 2: 155V / 157Q
Manhattan Prep 1: 158V / 157Q
Manhattan Prep 2: 158V / 157Q
Magoosh: Magoosh predicts your score using a range 151-156V / 154-159Q
Real GRE: 157V / 158Q
Clearly Powerprep was spot on when it came to my Quantitative score, however it underestimated my verbal. The same could be said for Magoosh. In my case, Manhattan prep was VERY accurate
I studied for about 3 months, maybe 3 hours/week
Good luck to all who are looking at this wondering how their practice score will reflect their actual score!