While we were at the Ohio gtg, Ralph broke out a digital scale and we filled the gas tanks, oil tanks, 16" bars and chains and got some real world weight of the above saws. Correct me if i am wrong on the Dolmar 5100S Ralph but I think it showed 15.5 LBS and the 361 17.5 LBS, 357 17.5 LBS and the Makita/Dolmar 6401/7900 was 18 LBS, Partner 5000 15.5 LBS with full fuel oil and 16" b+c's. So there you go real world user specs as being used. Thanks Brad for posting the pics of the 357 and 361 weights for proof of real world conditions.