I just picked up an MS461. It is amazingly unstoppable with the 25" ES bar with RS chain. I picked up a 32" ES bar (0.375" pitch, 0.050" guage) and RS full comp chain loops. I have to say it works very well, but I put the 32" set-up to work on some 30+" white oak, and it did bog down occasionally. I'm wondering if I should add full/semi-skip chain for "maxing" out my saw/bar on very tough hardwoods (oak, hickory, beech) or something else to really keep the revs / power up in these "hard" woods. Please let me know what you think. Please don't tell me to get a bigger saw;-) That will come later when I finally break down and get an Alaska mill...