I have a couple of them. One on an eFlite profile CAP232 and the other in a Mini Ultra Stik.

These planes are both on the small side (400-450 brushless motors) and Ive never had an issue with using the Orange RX in either.

i would not use them in anything larger or more expensive. Although there is a guy at our field that uses them exclusively. Even on his giant Rascal on 10s packs. Hes not had any issues that I know of. Although he did have a couple of crashes that werent determined exactly what happened. So maybe it was the RX.

Either way...I wouldnt use them on anything larger than say a .25 size plane. Just for the "piece of mind". But they are a bargain!