I bought a couple of these last Fall. Have one flying with Eflite 25's. One pushing, one pulling. Think I have 12 X 10 props, maybe 12 x 8's. Run three cell's stuffed in the front of the fuse. You'll find the kit a disappointment in the plastic parts area. I ended up backing all the plastic parts with a layer of fiberglass. Used the fixed gear that came with the kit. The goofy elevator control was replaced with thin wing servo mounted on the horizontal stab. Flies good. I can only get 2200 batteries in there right now, working on a plan to put some larger ones in for longer flight times. Jerry.