Must have to get >Q48

Short: Quant tests are must have to get Q>48 (earn them or buy them, they are worth it)
Verbal Tests, can't really comment. Just don't waste your time getting depressed about the score!

I improved from Q45 to Q49 thanks to GMATClub Tests.
The questions are logical, and simple OE makes you dumbfounded.
Although all questions are good, the question difficulty is not properly distributed for the tests I guess. I got 15 500-level, 15 600-level and 8 700-level questions in one test, I got 5 correct from 8 700 level questions. This test gave me Q36, and this is after I scored Q49, Q49, Q50 in previous tests.
Nevertheless, all the questions teach you something and this makes the Quant Tests must have to get that Q50/Q51in the GMAT.

Talking about verbal tests, everyone bashes them! I also cursed Verbal Tests as I scored V31 in 3 tests, whereas I was scoring >V35 in GMATPrep/Kaplan/Economist tests, But I was shocked to see V30 on GMAT. So for me they were pretty accurate!
Still I don't like GMATClub Verbal tests, there's something off about it. For example- I scored V45 in one verbal test! how can anyone justify that!