holy crap! i had no idea the fvmba was so organized..
FVMBA has a lot of dedicated Execs and builders who are very passionate about biking and trail building.
Back on topic - I have been using a MS170 for 7yrs. Its light, fits in my Builder pack nicely and allows me the spare wieght to pack in a load of nails if needed on various bridge builds. And when you're looking at a 1hr hike in and out you will really appreciate the light weight. I have noticed weak power here and there but in those situations, I take my time and let the saw do the cutting.
Replacing chains on smaller saws are cheaper too compared to larger ones.
Besides a bandage kit, I also carry a Fox 40 whistle on me for the days I am running a saw.