I did not try BL from other brand yet, but HV-Maxx rocks
. A customer bought TWO "full metal" E-maxx
and HV-MAxx from us, we put it together though
. that guy come back a week later saying that HV-Maxx rock. way too much power. he has to be careful with his throtal contral, else the truck just do willy and then back flip.
I assume that baby is powerful like a .21 engine
it can push a savage with no problem i assume