So, I recently bought a Rubik's Brand Cube, and have learned how to solve it fairly easily, but I wanna learn how to solve it FAST! However, i don't have Silicone, which is what I've been told is the best, and I heard Vaseline eats away at the plastic after a while. So, I need an alternative to Silicone. And yes, I have sanded down my cube, and it is a little faster. I have heard that PAM and other cooking oils work well, but I really don't know if I should trust it. Also, I plan on getting a Speedcube pretty soon anyway, but still want to make my current cube faster, what type of cube should I get? I have heard alot of great things about Zhanchi's, and they're relatively inexpensive too, what would you guys recommend?