RE: Evolution 1.00
Don't look at horsepower, it's smoke and mirrors. High horsepower ratings are achieved at very high rpm, much too high for sport flying, usually 15,000-16,000 rpm.
All reports say it's a good engine, better than a .91 and worse than a 1.20. I have heard that it turns slightly less than the OS 1.08, but it also weighs a lot less.