RE: Want my Slash to beat a buddies Savage X
the vxl system will be plenty of power for you. the sidewinder and mamba systems have extra nice features, but IMO fancy features can also mean more to go wrong. i have a NEW sidewinder esc sitting right now, cause i cant get my computer to use the castle link. and the millions of programable features on the esc make it really hard to program via your transmitter. the vxl esc on the other had, one button and only the features you will require. its plenty capable of beating a savage on 7cell, tho i would suggest a 2s 20C lipo. youll get better punch, and longer runtimes. not to mention, the less wieght of a lipo.