Which is better built in terms of reliability and longevity, Stihl or Orange. Usually I get 2 years out of a husky, doing maybe on average 3 hours saw time per work day. I usually get 55 to 70 cc models, been using a lot of 357XP. One only lasted 6 months and burned out the piston ring due to an air leak. That pissed me off and is making me think of going Stihl. How do the Stihl rack up for durability compared to Orange?