I have owned a myriad of Honda small engines in my life from dirt bikes, four wheelers, go-karts, pressure washers, to lawnmowers I have never had trouble out of any of them. I kept up on basic maintenance oil changes, spark plugs, oil filters, and so on, and they just keep going. My pressure washer is a Honda powered unit my father bought new when I was about 12 I'm 35 now and the engine runs like a clock. It's had new hoses, fittings, and a new pump but that little OHV GX160 is still getting it done.
So I'm say stick with the Honda's. They make more piston internal combustion engines than anyone, for good reason they know what they are doing.