I have been running both Stihl and Husqvarna pro series saws for the last 50 years with the 500i being my most recent acquisition, short term review with only 5 gallons of gas thru the saw in a two-week period thus far loving the power to weight with the Stihl 25" Light bar I have been running 572s and 592s currently and this 500i is lighter than either with power in-between the two.