Pros: Powerful saw, always starts hot or cold, runs/idles great.
Cons: Needs an air filter you can clean instead of replace.
I have a 455 Racher with the 18" bar.
I had problems with my chain locking on the bar and jumping off. I solved this by only using the husky bar oil (instead of old motor oil) and adjusting the oiler wide open, there are 3 settings. I am hard on saws I don't mix the gas/oil correctly, I rarely clean it, and it spends a lot of time riding around in the back of my truck but this thing has been a trooper for the past 3 years. I posted this because I saw a lot of problems with chains and thought I would try to help out.