GMAT Club tests are a must for someone who wants Q49 or above

I was fairly good at quant since my school days. However, after preparing for a few months and completing the OG questions, I observed in the GMAT official mock test results that my scores in quant are varying. I got Q42 and Q49 which was a huge difference and my Manhattan mock scores were also in Q39-Q41 range. I reviewed the mocks and found that I am doing silly mistakes and falling into traps set by the questions. The questions were neither difficult nor lengthy, but there were some minor details which if missed will make the test taker fall into trap and the trap answer was always in the options.

I heard a lot in the forum about the GMAT Club quant tests and gave it a shot. They were definitely tougher, but after every test I used to make observations regarding which traps I fell into and used to make a note of them and try to avoid them in next test. The questions written were actually similar to the real thing especially the traps and the language. After giving 10+ tests , I was much better at finding the trap and ensured that I understand every detail of the question to avoid any silly mistakes. I never scored more than Q47 on the GMAT Club tests but consistently got Q49 in the last few official mocks and also got the same on the real exam. The tests really train you well to avoid silly mistakes, and nothing is more frustrating than finding out that you know the concept/formula, but got the wrong answer due to some silly mistake.

Also, the statistics and topic wise data of where I was doing well and where needed improvement also helped a lot. The answer explanations were satisfactory as well. The user interface was also very similar to the real test.

Regarding the verbal, I only used them to build my stamina and didn't took the score seriously ( was usually getting V32-V35 range) as most experts here suggested that for verbal the official questions and mocks are the only real indicators. Hence, I can't comment much on this section as I didn't explore it enough to make a fair judgement. However, I can definitely say that the quant tests played a huge part to improve my quant accuracy and were a great resource for practice.