Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
I'm not sure about the MGMAT's utility as a course but what I can tell you is if you want to break a leg in quant, they are the ones to pick. Just to look at their quant problems of the week gives you an idea of how daunting their math problems can be. Akhamai is an old member of this site and a MGMAT instructor himself. Maybe he can elaborate on the course.
If Princeton Review has classes near you, I would look at them too. The course materials are excellent, and the instructors are very good, especially about helping you outside of class if you need it. They've made the course more intense recently, probably because some people thought it was for low scorers, so it's definitely worth a look.