The hobby king esc is a Hobbywing repackaged. It has same form factor, and the uses the same software to program it. Ive been using the X-Car 120 for well over a year, and have had no issues. It runs my 13.5 in my 22SCT. I would read the reviews and the manual. Some issues I have seen is from misinformation. I think one of the speedo's say, only use with 4pole motors, and the guy complaining was using a 2 pole motor. Just read, and ask questions in their forums.