Having never really used a chainsaw much when I started burning I bought an ms 270 to help me with with my scrounging mainly because I figured something smaller might be easier to handle. Three years later I'm feeling like I want a little more power in my chainsaw so I started looking for a used one. I found a guy on CL with an MS 390 listed as like new for $400. Before I take the plunge and buy something used from someone I don't know I'd like to know if anyone can offer some insight as to how much better the ms 390 is over the ms 270? I'm feeling $400 is a fare price. I can always sell my saw to offset the price but before I go through all that I'm hoping someone here can help me decide if its a worth while upgrade or should I look for something else?