Monocock, if you're already flying at 110 knots and climbing at 1700 feet per minute why would you change?

Just FYI: the Ivo inflight ultra-light costs
$1,200. US. Works great on a 912S 100 hp and only weighs 9.5 lbs. This is the prop. I have on my model 4.
I cruise between 115 and 125 mph and top out at full throttle 132 mph. No wheel pants or radiator scoop or any other speed mods, yet.
I do think it's easier on the Rotax gearbox due to it's lower weight.

The 3 blade ground adjustable ultra-light is $600.00. Weighs 8 lbs.