I use a Saito .72 in mine and I feel that it is perfect for the sport flying and putting around that I use it for. I like to fly it slowly with just enough throttle to perform the manuever that I am doing. I rarely go full throttle. It has plenty of power but does not have unlimited vertical by any means. But the Hog, in my opinion, is not that kind of an airplane to begin with. If you want insane power and extreme aerobatic potential, rather than putting a huge motor on your Hog.... buy an Extra, Yak, whatever...[8D] Yeh, I got that kind of stuff too.
Mike