3 things that would make me buy a mamba pro, in adition to my RX8...
1. push button programing, simaler to the sphere or tekin, I can't stand the RX/TX programing...
2. a FUSE!!! have something simple that will blow before the whole esc goes, saves you $$, saves us $$
3. user replaceable switch/servo leads without voiding the warrenty