I have given the test very recently.I studied for 3 months(while doing 45 hours/week job). The only material I followed was Magoosh and English is not my native language.
Magoosh Test1: Q:161, V:151, Total: 312 (16 days before Actual Test)
Powerprep T1 : Q:160, V:153, Total: 313 (10 days before Actual Test)
Powerprep T2 : Q:157, V:155, Total: 312 (03 days before Actual Test)
Real Test : Q:159, V:147, Total: 306
I don't know why but Powerprep overestimated my Verbal Score so much, I was really shocked after the test.
I am not sure whether a retake will increase my scores.