I fly mine with a Hobby Lobby 400xt outrunner and it is awesome! Only a $25 motor! Unlimited vertical with a 3 cell Thunder Power 910 lipo and an APC 8x6 slow flyer prop. Also, two e-flite servos and a castle creations phoenix 10 esc. I had to add some ballast under the battery to make it ballance so, I think a 3 cell Thunder Power 1320 would be ideal. With the 910 mah Thunder Power I get 30 minutes of flying if I just cruise but only 10 minutes if a really ring it out. This is one of the best flying wings I have ever had. It has quickly become the club favorite and is replacing the old favorite, the gws slow stick. MS Composit hit a home run with this one!