I have purchased from him (1885 3 cent in Choice AU, and my 1798 S-156) and I have been please with my purchases. I agree also that as my needs narrowed his has been one set of ads I check because he is most likely to have items I need.
his grading was quite accurate I have only purchased one coin from him and that was more than 20 years ago. I was very happy with the MS shield nickel and it was accurately graded and described.