Focus on the GU curriculum and supplement with MTS. The GU curriculum I can personally attest does a fine job explaining many of the basic principles, though no system or curriculum will suffice to teach you everything. The Twister lesson in GU master cycle gave me a nice perspective in contrast to the Mastering the Twister DVD. They didn't contradict each other, they merely had different ways of explaining the principles. Obviously Eddie is the master of the twister, however other perspectives are healthy. There are moves that I learned straight outta GU that I use in my rolls daily, some of the stuff is absolute gold. I would focus more on lockdown and twister/truck game, Jean Jacques butterfly game, while waiting to personally work with a 10th planet instructor to appropriately learn the rubber guard. My opinion so you don't pop your knee.