I am about to graduate as Certified Occupational Therapist Assistant, and will be going straight through to be a full OT before too long. I also have a lawn/landscaping business that has gotten me through school and will probably/HOPEfully keep paying off those student loans on the side I have already started developing a little paresthesia, especially in my right hand, which is a bad sign for carpal tunnel. All of the vibrating equipment in our industry not to mention the precarious angles we have to work with are just bad news in the way of our chances to develop injuries from overuse/etc. My professors use me as an example/guinea pig all the time because I think I'm the only student we have who has been doing hard manual labor (lawn/landscaping, logging, commercial fishing, etc) I haven't personally got to try out any of these battery operated Stihls, but I've defintely taken a good look at them (all my peripheral equipment is Stihl). I assume that the vibration is taken down to zilch compared to the gasoline engines, and this could save big $$ on possible surgeries or other therapy services that a guy might need to go through from all of the power equipment usage. Also, you get to feel your 1-3 fingerstips for the rest of your life, which is a plus, haha, not to mention all of the other pain associated with CTS. Also- it looks like nobody has considered the cost of oil mix? I use stihl's ultra-mix, which makes my 2-stroke fuel cost around 7$ per gallon and on a side-note, just picked up a "used once" Stihl ms 362 for 500 bucks, and I am a HAPPY man!!