Hi Mekhdi,
I have tried Cracking The GMAT Premium Edition by Princeton and it was a decent for learning the basics and good value for money especially because it gives you access to 6 practice tests which contain some nice questions (however their scoring algorithm is a bit weird).
I think it was a good idea to try on the Kaplan GMAT Premier 2017as they also come with 6 practice tests that are a bit more reliable than Princeton.
You should try out all the
MGMAT guides they are phenomenal and cover the entire syllabus really well. I must add that if you are particularly looking to discover and improve on your weak areas in quant; a subscription to
GMATCLUB tests is the best way to do that. They are indeed phenomenal and will not only pinpoint your weak areas but also help you improve on them.
If you are not happy with your progress in Verbal, try out the
e-gmat verbal online or the
e-gmat verbal live course. They are both amazing courses especially designed for non-natives. They offer almost 25% of their courses for free so you can try out their free trial to decide which one you want to go for. Plus the
e-gmat Scholaranium which is included in both the courses is one of the best verbal practice tools in the market.
Further taking multiple mocks might help. Apart from the GMATPREP,
Manhattan GMAT tests and Veritas Prep Tests in my experience have a good verbal and Quant section and will certainly help you point out and improve your weak areas.
Further another advantage of taking many mocks is to build up your stamina. Apart from the GMATPREP tests, taking practice tests of any major GMATPREP company ought to do that.
Lastly the latest version of the
OG and the verbal and Quant review that you have ordered are great materials for some great additional practice. Here is a link that will help you with your decision.
https://gmatclub.com/forum/best-gmat-ve ... 68383.htmlHope this helps. All the best.