One other nice thing about a permit Pitts is that all the parts are easy to get or make yourself. With an aircraft Spruce catalog you can fix almost anything if you are good with your hands.
Not sure whether thats as easy with aircraft that were factory built such as the Bolkow etc.
Also if you get a good Pitts and look after it you will get your money back.
Rob Millinship is the man to talk to if you want a Pitts. If you are passing Leicester then drop in because there are quite a few there. You will be able to see the differences between the types and also between the same type as they are all homebuilt.
ZA