The bt45 is a 27cc engine, as much as some other auger powerheads. I believe it has enough power, 2 speed choices, just not the right handle arangement. At $500 dollars it is not a good choice. The bt131 has had the product liability gods guarding it, My bt120 is basically the same thing without all the guarding, But again if you want a machine for all year use it is the unit.