Someone have any idea about the differences between those two systems? Have hard time to find any valuable information. I'm looking to install it in a 1/8 scale truggy electric version (new Losi 8ight-T-E or Team Durango DEX8T roller, not decided yet). I always run it on the track on 4S LiPo.

Sidewinder 8:
fix Bec: 5,5V
up to 11lbs vehicule
1515 series motor
2200Kv
60000rpm
220$

Mamba Monster 2:
adjustable Bec voltage 5-7V
up to 15lbs vehicule
1515 series motor
279$

Those 59 extra $ worth it? I can't believe the only difference is the programmable Bec voltage. Any advice?