I am looking to build an F550, I am looking at the E300 or the E600 Tuned Propulsion Systems for it. From what I can see the E600 is a clear winner. at 1600g per axis and a total lift of 9.6kg thats a significant increase in lift over the E300 system. Even with having to use the heavier 6S Lipos which are only about 500g heavier than a 4S. I am new to this, is there something I am missing? Thanks!