I can think of only one, but the frothing occurs in copious amounts!
EDIT: I can think of another now, recalling who was offended when I mentioned that most people would get a better edge. Japanese planes for one...lots of dogma in the sharpening of the tools, but performance and speed, a ruler tricked edge with a 2 degree microbevel off of the primary would perform better and sharpen in a third of the time. It's one of the things that keeps me on the western tools (how long does it take to sharpen an iron in the middle of work, accurately, 2 minutes?). Makes me a little nutty to spend 5 minutes refreshing a japanese iron that's taken a lot of wear.