After doing a lot of online research I chose this model. Its the best 2 stroke engine I have ever come across. So easy and quick to start (2 pulls). Powerful engine, can be set to any revs you want or has variable trigger throttle. Blows like crazy and sucks and mulches leaves 14:1. Has metal blades, very strong. Just beware it will suck up small stones etc as well and stuff the blades and warranty. Which is a very good 3 years domestic. Only downside tubes are ridiculously hard to get on and even harder to get off.