I have had the Moki 1.80 and 2.10. Liked them both. The OS 160 is more available and stable company. The Moki has more power and sounds better IMO, better bark. Uses 0% nitro fuel, very fuel efficient. They are heavy but powerful. The low mixture dial moves, that's the only thing I didn't like. I think they have a clip for it now. The Moki is good for about 14 pounds max. Anything more and you need a 50cc gas engine.