I'm a 710 retaking. I got a 48/39 last time. My strategy studying these past 4 weeks has been to get SC down (I did all SC1000).
I have also done 13 challenges, and my scores have been better than they were last time.
Last week, in two different sittings, I took Powerprep 1, and got 49 M and 44 V. I did see some verbal repeats, so I didn't get too excited.
Well this morning, i got up at 6:30, and did gmat prep 1 at 8 am. I did essays, math, verbal, everything with accurate breaks. I will take test at 8 am on Saturday, so I wanted to mimic conditions exactly. Well I saw no math repeats and only two verbal repeats (which i gave some answer as before).
I got 47 M and 44 V. For 730.
So im generally pretty excited. I feel math score was due to being tired (and i will practice more the next 4 wknds), but the verbal i think is clearly showing difference. Since ive really gotten SC down, its also giving me more time on RC and CR; which my extension has improved my efforts there.
That said, Im getting real hopeful now that an actual 49M 42-44V is possible, and a 750+ is realistic.