A must go for Quant

GMAT club CATs are really a helpful bank of questions you can use for your practice. The quant section is a bit more difficult than actual GMAT but it's better to be prepared for the difficult questions if you are aiming at Q50+.
For verbal, I wont advice GMAT club as an ideal solution because GMAT verbal is very much different than CATs. This what i felt when i attempted GMAT.
But as this mocks is made available for free on ocassion such as christmas , You can definitely use this to get an idea about your quant capabilities. Also you can subscribe to the Youtube channel and get this test free for 7 days. All this offers really help out with preparations. Thanks a lot GMAT club for this.