My first BL system was a Castle Sidewinder SV2.  My buddy, EGBasher bought one too.  They each lasted a few months before the ESC crapped out.  Got NO help from Castle AT ALL.  Really soured me on CC products.  Not only that, as someone else mentioned above, I had to buy a new radio system because of all the RF noise that SW put out!  It would barely go ten feet before the car would loose signal.  Rediculous! 

After that disappointing experience, we bought EZrun systems and haven't looked back. Over a year later, and the same systems are running good as ever.  These are the little 35A systems with the finned motors.  Plenty of power for a light-weight (3.5lb) truck like an Evader.  And believe me, we run 'em hard.  AND, they don't put out massive RF noise like CC's do. Budget-friendly and reliable, that's what I like.