Originally Posted by yodace
is there any major differences between the o7 sphere comps and the newer version?
Yep, there are. The LRP SPX Comp and Sphere '07 are slightly different overall, but vastly different on Power Profile 7 and 8.
LRP does some magic that allows the motor spin up higher rpm's. Most are calling it a dynamic timing, as motor rpm's increase, the timing increases. You typically have to gear down 2-4 teeth with on these "magic" profiles.
As for the Comp '07, it is still a very good ESC, but I will be replacing all my non-SPX speed controls with SPX's.