I've had quite a few 2strokes in the past,inc an E-tec which I quite liked...and I would say the smaller RIB the more important the engine weight/power ratio choice is.(always..in the past anyway!..a 2stk pluss)
For Ease of operation,Great economy,Clean burning,Whisper Quiet running and no Flaphing with Oil!..With the proviso it's matched to the right Boat... For me the Four stoke wins out!
Maybe some of the Die Hard 2stroke boys should try a WELL-matched 4stk Rig some time!
In the end it's down to personal preference of course,but IMO it does pay to have run tried BOTH if you are going to make comparisons.
The commercial RIB operators Market is always a good indicator...and I wonder what the ratio is between those which run 2stk and 4strks these days?
...Or... maybe I don't!