I like my Sukhoi. I have the 2300 on it. Like you are saying about the g90, it needs to spin faster than what they claim. I never liked the 18-8 prop, and the 18-6 is too little pitch at that rpm. Some run a 16-8, but the big cowl does a number on that. I use a 16-10 for best performance. It turns just over 9000, and it still throttles very well.

I have a new g90 with a 13-8 on it. I haven't flown it yet, still on the run in stand. I used to use a 12-6 on my 60's, so that sounds really small for a 90.