I used to run Savox, had some problems but nothing out of the ordinary... I have been trying different ones lately. I have Proteks in my buggy 130T, and have now been using Hitec 7954's for Truggy.
I did have an issue on one of the protek's but A-main customer service kicks butt and I had a new one sent to me and no problems since then.
I wouldnt hesitate to use Savox, Protek, or Hitec's, they are all good and all have their pro's and con's.