I find myself using Japanese chisels more and more, and furthermore, using them with metal hammers. With timber framing, this meant my 16oz estwing hammer. With the bench chisels, I have an old ball peen hammer. I started to look at gennos of various weights, but these things are freaking expensive. Even used hammer heads in the 300-500g range are $100+. Is there much practical difference in different makers/price levels? Am I just as good to stick with my current crop of hammers? Interested in the views of people with genno experience.