I did about 400 hours in the FH1100 in Papua New Guinea in the late 60s. It had a derated C18 engine and had a surprisingly lot of grunt doing mountain top landings up to 12500. A 206A couldn't hold a candle to it for altitude work.
Sad to say my first instructor was killed in a FH1100 when he appeared upside from low cloud during a display at a Paris airshow.