Prague
I did treework for years. Husqvarna 372 XP was my favorite. .058" chain with a 20"bar. 71cc Comfortable to swing around all day and fast chain speed. I believe that it was replaced with a new model recently though. It is $900 saw new but if you are mechanical and could find one on craigs list or something you would be happy with it. I also own a Stihl MS 362 which is great too and has a 59cc engine.
If you don't hit the ground much and are mainly cutting log wood a chain will last you quite some time. Go to a power equipment store to buy. If you find a store with both Stihl and Husqvarna they won't be bias and they could probably help you get what you need.
