I have two of the Pheonix SD's.. I put a Saito .56 in the first one and had a blast with it... I wanted a little more power though so I put a Saito .72 in the second one... Perfect match for me.. The Satio is swinging a 14X4 APC prop on 15 percent PowerMaster fuel.. Lots of pull...
Both engines are mounted in the supplied mounts in the as comes location... I mounted the engines as close to the firewall as possible and then fit the cowls... No problems there.. I did end up nose heavy though so I cut the covering on the bottom and mounted the battery pack about midway back in the fusalage and replaced the covering...
I also added some differential to the ailerons so I did not have to use the rudder in truns... Makes beautiful turns now...
Take offs get a little squirrly at times and can get ugly but the .72 has the power to pull me out of a lot of them... Once in the air I love the way this plane flys... I don't understand the "pig in the air" comments at all... I have the elevater etc set at recommended throws and have not had it snap on me yet... Just a pleasure to fly....
On landings I find that I have to keep 3 or 4 clicks on the throttle and let her settle in cutting the throttle about the time the wheels touck.. If I chop it while the plane is higher it will bounce every time...
IMHO these are well worth the money...