Well the 4 mix has been out a while. I eventually want to buy a high power trimmer and it will probably be Stihl because of local service I can count on. I have been running fs 85's I think. I would like just a bit more power with me next unit. I really like the light weight 2 strokes but I doubt I could find a powerful two stroke Sthil still in stock. So after running the 2 stroke all those years how does the 4 mix models compare. My dealer acts like they are powerful but really don't feel as powerful because of the 4 stroke design. So, which model should I be looking at? I don't have to have the most powerful but close. As far as weight and power what do you think of the new Sthil 4 mix trimmers. Please be model specific and how they would compare to what I have. They seem heavier and bulkier but this may just be my perception since I haven't used one. Thanks! I could jump ship and go with Redmax I guess but the dealer is further and I'm not sure about service. But if you want to make a comment on how they compare that would be ok.