We've used a Scorpion XL in Explosion for coming up to six years now and it broke for the first and only time this year (which is especially good considering how heavily used Explosion is)! Even then the customer service was excellent and they gave us all the information we needed to fix it and we got it going again for Portsmouth 2 weeks later. We also used a Sidewinder in Invasion for years (excessive for most feathers but made by the same company) and never had any issues. We've got a new XXL to put into Combustion so we're sticking with them simply due to how good they've been from experience.

Just for another perspective and to put a good word in for the Robot Power speed controllers