[lincpimp]

Well, for a start, higher voltage generally runs cooler, and allows for cheaper lipos, as the c rate and overall size can be smaller. Until you have run a hv setup it is difficult to understand the difference. Also, depending on the lipo, the lower amp draw due to increased voltage provides more performance at higher motor loads, as the batteries are not working as hard as a 4s setup would be. 6s is good, much better than 4s in my experience. Plus the cheaper feigao motors seem to run cooler at higher voltages, as their is less current going thru them. The higher voltage helps the ineffecientcy of the motor a bit.