Everyone responds differently to different compounds. Personally I felt EQ, Anavar, and Sust didnt do very much for me. On the other hand I responded well to Test Enanthate, Test Cypionate, and Tren Acetate.
And yes, O's/Sust are quicker acting because of the test blend, so there could be a dead period where you don't see much while you wait until the Enanthate kicks in.