I wouldn't go with the orangeTX simply for the weird issues people get with them. A DX6i is very nearly the same price and while the orange has a nice backlight and menu it literally seems hit and miss what features you get.I've yet to see a pair of OrangeTX's that actually operate in exactly the same way! OrangeTX's and LemonRXs do work together.

Also as a side note: Whether a receiver failsafes or not is solely down to the receiver. The transmitter has nothing to do with it as that is the entire point of a failsafe. The transmitter is not there.