@Ellis,
The breaking on one side and not the other you're experiencing with the Electronizes is a feature I've experienced and I believe it's down to the Relays.
On Bitza sometimes when the stick centralises on the Tx it'll swap the motor direction (the relay clicks over), which feels like breaking, only it would only do it on one side.
Why? I don't know, annoying? Yes!

Electronic breaking is good for control, but it'll make your ESCs work hard.