Hi Tom, the Dolmar 540 is about 6 cc larger than the 028WB, about the same weight also. I had a Stihl 028 super and a Dolmar 115i which is 2 cc smaller than the 540, my Dolmar was more powerful than the 028 Super but both are great saws. The 540 should be a nice step up in performance for you, but I too would like to know the actual weight and hp numbers for these saws. I think the only advantage the Stihl has over the Dolmar is dealer support but that is slipping where I'm from. The box stores are driving the small shops out of business around here.