Thanks for the answers to date, very informative. Especially the view that a CS prop and retractable undercarriage do not make anything a lot more complex.
B.B. the addition of a CS prop and retractible gear will of course add to the purchase cost and maintenance cost to some degree, but the increased performance is a reward well worth having.
The difficulty of flying the thing is a non issue, its just another type check out and it is not difficult nor complex.
Where you must take care when flying is using common sense and knowing what not to do.
It is known as airmanship which trumps all other considerations.