Thanks for the inputs guys,

Bryan would you recommend to someone to switch to a CDI if weight limit permits? Is it worth really for the average pilot? If used with 30% CP Helidoes CDI create significant smoke trail?

Well on my ProLine i have tested so far 17x12, 18.1x10 and 18x11WPN Ican not say that Iam really satisfied completely with any of these props, the 17x12 is used mainly in windy conditions. Ihave now to to try 18.1x10W and 18.1x11. Just need to find a prop that can really speed the airframe when needed and to fly slow in calm conditions.

What do you think? Inputs are appreciated.

Nikos