I have used both a Warp Drive 2-blade and an Ivo Prop medium 3-blade on a series 5 w/ C-0200. What I do remember is that the Ivo Prop was easier to adjust the pitch with than the Warp Drive. I recently had my engine checked out by CA Pwr Systems. While discussing props Brian suggested the 3-blade Warp Drive. Looking at the prices, the prices are comparable. On my current KF5 project, I'm planning to go with the Ivo Prop again.

If you are not going LSA, the Ivo Prop has a cockpit adjustable option, which everyone I know that has it highly recommends it.