Hi guys new to site today but have been reading things that pop up on Google search for quite some time so ive come to ask for help. I currently have a ms 250... i know not a pro saw but in my defense when i bought it 16 years ago i was told it was... it was a replcemet saw for my old ones...been a great saw for me so far no issues other than to small for what i did with it and have bought all my other products from stihl... just not that dealer. Anyway i am looking for a new saw i wanted a ms 261 or a ms 391 two different saws i know but the mtronic scares me so want to know how long they last i wanted a 24 inch bar but only need a 20 and im only interested in a stihl no husqvarna dealer around me only big box stores.. any input is much appreciated thanks in advance justin