Don't forget the Airworld Hawk at 1:4.5 scale. I was told it is a superb flying machine and so it proved.
I have 2, both powered by JetCat 180 RXIs with Weatronic gyros on rudder, ns and ailerons. I never tire of flying it AND it fits perfectly into. a BMW 5 series touring with a few cm to spare !
After stiffening the fin internal structure and some slight mods to the landing gear mounts, it is perfectly reliable. Almost 200 flights up.

I also have a SkyGate Hawk with Olympus power and full internal ducting, flies beautifully but handling this big model is a problem, making it less user friendly.