Both are CC ESC's, it's just one is good to 12 or 14 cells instead of just 6. The 550, however, was built to run on 6s though so you should be fine with teh standard Edge. However, if you wish to put this ESC on a 600, you might want to dump the extra coin for the HV. I'm pretty sure you can run a 6s on the HV, but you can not run a 12s on the standard.