PrepSwift videos vs Additional Must-see videos

I would like to know if PrepSwift users should also watch the videos on Essential Techniques, Tips and Tricks, and the Must-See videos, as I find these to overlap in the first few videos. Would be great to get your opinion on it. I finished all of PrepSwift and all of its TB quizzes. Aiming for 170Q.

You don’t have to, though it wouldn’t hurt to watch them, especially the must see recordings. You can refer to So you wanna get a 340, 6.0? (Part 1 - Quant) - GregMat for more on the 170Q.