if you buy a Japanese bike you keep it for life, like Herpes...

Honda, Kawi, Yamaha all 3 right up there, with Suzuki bringing up the rear when it comes to Japanese bikes. Overall, I'd pick Honda and Yamaha overall over Kawi and Suzuki but that is my opinion only, there are some good models of Kawi and Suzuki to pick from though as well.
I wonder where Kymco, Taiwanese based, is at since they use to make long ago small motors for Honda? It's gotta be better than HD right?