The Brillelli 25GT with magneto or w/ei is a real winner. You will not find a better engine anywhere for the price and both Scott and Mark at Brillelli are working on a new engine that will be much ligther and should still have the same power. These new engines are being tested right now by Scott and Mark and weigh in the 2lb 4oz range. At that weight you could fly many 60 size planes with these engines.