It only flies a little higher on the turns mate. In a straight line.. the Rapide is a little lower and they were both only 1400ft so no need for oxygen All 3 used to be operated by Air Atlantique Classic Flight at Coventry and many here will have flown on at least one. I've not flown on either of those Rapides (though I've been in both.. I based DG's FS9 Rapide panel shots taken in AIDL) but I've flown in the Devon. Sadly.. it is no longer cleared for passengers
Eric's avatar is a shot taken from inside the Devon
ATB
DaveB
They do look rather similar don't they I think it's probably safe to say that if you know your way around the Rapides engines.. you'd feel relatively at home with the Dove/Devon's