TTP will make you a GMAT Rock Star

I am an international (eastern European) student and I've used TTP for the entirety of my GMAT prep (3 months from 620 practice to 760 official). I can tell you that this quantum leap would not be possible without TTP.
The greatest thing about TTP is how it makes studying for GMAT enjoyable. Going through the study plan that the program offers you feel the need to break you accuracy scores, to learn a new trick or method and to work through every difficulty offered. Nothing is more gratifying than hitting your target during studying and TTP makes sure to notice that and motivate you further.
While the Quant course is entirely complete and perfect, the Verbal has been introduced recently and is still under development. Nevertheless the CR part is very comprehensive and the SC is just enough for a non-native to get the grasp of the GMAT issues. The only thing lacking from verbal at the moment is the vast amount of practice questions that are there for Quant.
All in all - TTP is an amazing course, which will change you from a GMAT n00b into a GMAT Rock Star and as soon as you start using it, you'll know why.
Highly recommend!