Because of the hype from Jan Eggenfellner, and the hope that we would have a reliable, modern electronically controlled engine, we chose his at that time the latest offering of a 3.6L Subaru with a Quinti/Sensenic electric constant speed propeller. We found out, unfortunately, a step at a time, that the engine had many problems. Almost all of those we fixed (lots of time and $$), with the guidance of members of the online Subenews Yahoo Group. But not soon enough to stop us from spending a huge amount of money and time trying to make the engine work reliably. We were about to hire a local professional racing engine builder to install a set of new, forged pistons from a racing shop in California, when I received a call fro another Sportsman builder who lives in Alberta, Canada. He and I had corresponded before about our two Sportsman projects, both of us using a 3.6L Eggenfellner Subaru. Unfortunately, he waited until two years after his engine burned three pistons and quit on him at 900 feet during takeoff to call me about the failure. He had removed the failed engine and immediately purchased a Lycoming IO-540, installed it, and continued flying. So, after his belated phone call, we four had a serious discussion and decided that this report, and some other we knew of where various failures had occurred, we decided to cut our losses, sell the Subaru, and buy a Lycoming. Very luckily Brutus found a local RV-10 builder who had his Lycoming O-360-A1A with Hartzel prop for sale. It had 850 hours, had been maintained absolutely by the book, and was upgraded in many ways. It took us no time to purchase this engine.