When you consider that Van has always said that a fixed pitch propeller has been a challenge due to the large speed range, being able to use a C/S prop seems to be the obvious solution.
I know that some of the composite and wood props flex and give etc, however if you want to take advantage of the total performance that RV's give, I think the added expense and complexity of the C/S prop is well worth it.
However, that said, if your budget and chosen aims of the finished aeroplane tend towards FP - go for it.
My aeroplane partner, Mark, built a 7, FP. Great aeroplane, great build and finish.
He had offers for his, I wanted to sell half of mine when I finished mine and we ended up half and half in mine.
I have an IO-360, MT 3 Blade.
It looked like a perfect match - so I gave Mark a ride in mine.
I think the phrase rhymed with Clucking Bell when I opened her up on the runway...............
Ironically - one of the issues of the MT is that we seldom land fully fine - usually set to around 2500 rpm, gives a much sweeter flare and there is plenty of power in the event of a missed.
Horses for courses - it's just that ours is a whole lot more fun
