The pitts is nice, but before you build it, you might want to read my write-up on it. It's actually a really good kit. But if you go with a strong, heavy engine, the landing gear needs to be beefed up. Also the cowl was a pain and I would replace it with an after-market item if there is one.

http://www.airfieldmodels.com/galler...cial/index.htm

That's my only experience with Herr kits so I thought they would all be pretty good.