I have no idea what a wisenheimer toy is; as mentioned above, I've been trying them and I agree some don't add any real value, but others like CodeFactor and Codacy worth some extended testing.
they do mostly the same we've been trying to achieve with plone.recipe.codeanalysis, but they include some other tests and have a nice user interface and graphs that help you review the trends on your code quality.
these are tools people that collaborate and develop software together will surely appreciate; they are probably less interesting for the lone wolf types out there.