I've ran them on several cars, they work like they should, and are cheap. My only concern is, that I get more glitching with them than without. I have 4 or 5 of them. I have a bad rf problem around my house for some reason I havn't pinned down yet. It doesn't affect brushed cars, but pretty much all the brushless ones do it.
I have a few, and they work fine. They are a bit noisy, and I have had to move them around on the chassis to cure glitching. The ccbec is better, although it has its own issues if it fails (cooking receiver and servos).
Not bad for the price, and I have never had the turnigy fail on me...