I took the princetonreview practice test back in may to check in, but started studying early in February and just recently got my actual scores. So the other practices were all within the last couple of months-
Princeton Review: 161V, 150Q, 4.5AW
Kaplan #1: 163V, 158Q
Kaplan #2: 155V, 149Q (wasn't in the mood that day)
PP #1: 166V, 154Q
PP #2: 166V, 157Q
Actual: 167V, 155Q, 5.5AW.
So, like most others, power prep was definitely most predictive!