Just starting on our ES fastbuild, so 2 or 3 years away from engine decision.  Love the concept of the Deltahawk 200 hp.  They say they are 1-2 years away from cert. engines, experimental sooner.  200 hp should be plenty for takeoff, since much more torque available, and the 200 is there all the way up to flight levels.  Fuel savings in 2000 hours will pay for the engine, plus no worries about 100 LL.  Anyone else looking at this engine?  Ed Gray