As I posted in another thread, on Saturday I took GMATPrep 1 (my first time taking a practice test) and scored 680--Q38 and V45.
This morning I took GMATPrep 2, and once again scored 680--this time with Q36 and V47.
I hadn't expected a big change in score between Saturday and today, and was glad to see that my overall score was unchanged. This gave me a little more confidence in the accuracy of the GMATPrep scoring.
What's weird is that when I took the first practice test on Saturday, I was really nervous and thought I did way worse than I did, particularly on Quant. But today I was more relaxed--I think since I had done this before--and actually felt better about Quant, but got a lower score! I didn't manage my time well, though, and in the end had to rush through several Quant questions that I'm pretty sure I could've solved correctly if I had had more time.
Anyhow, I'll keep on drilling with Quant this week, but for the most part I'm done preparing. I take the real test this Saturday. I hope to goodness it's not harder than the two GMATPrep tests!