I've got a Hozan c-205 and it's the best lockring tool I've ever used. Way more grip than the Park tools that I've tried. I had to have the LBS order it in special - when I asked them to order it, they ordered a Park, and I was just like, 'Uh, no, I want the Hozan - the one you have in your self serve shop...' It's thicker metal, and really grips well...

My 2 cents.