Zenoah makes one of the better first time gas engines, very user friendly and trouble free. Parts are easy to come by. After that there are gobs of cheap engines from China showing up. Then you can start going nuts with ZDZ, DA and other top brands. I have A Zenoah G-62 in one of my planes, A 30% Extra, should be all finished next week. I have the RC Showcase 1.40 22cc gas engine on A 120 size Kaos, that's next up in my, to do list. This little engine is good for any of the bigger 60 size planes and the last plane I had it in was A 73 inch Extra. Perfect IMAC flyer but not enough poop to do any 3-D in that plane. This little 22 cc engine has A lot more power then any other small gasser I have ever seen. Under my bench I also have an almost brand new Brison 2.4 40cc engine. I killed the plane it was in and haven't scratched out another one so it's just waiting for another scratch build, pretty much anything under 15 pounds and this engine is A hot mama. As A first time engine you just can't go wrong with A Zenoah but I have friends that fly nothing buy conversions. A small gasser in the Tower/GP giant Super Sportster is an outstanding first time gas powered plane. There are some small, light gas engines out there for the smaller planes in the 60 size.