I've been looking at these quite a bit, and a mechanic/friend of mine has installed a couple. My conclusion is the biggest significant advantage is a fuel burn that seems to run 1-1.5 gal/hr. Many say if you have fuel injection, it eliminates the hot start issues?? Smoothness at idle is acknowledged by many. I have also read about being able to idle at a lower rpm, which I thought might let you land little shorter????
In the neighborhood of $6000.00, so, fly a lot, and it should be worth it.
I say, go for it, and let me know haw ya like it
Gary