Go with Castle. Sidewinder is only like $75 bucks at HolmesHobbies.com and it will run a 3s lipo and dual motors and never even get warm. I ran mine with a 4300kv brushless motor in an 1/8th scale buggy and it only barely broke a sweat. The mamba max is only a little bit more dough and it comes with the programming software and cables. "thumbsup"