I run 3/8 .050 on everything, even my tophandles (3/8LP)
can't stand .325, stihl or husky, they both get wobbly side to side and quit cutting really fast, I think they re-label the bars or something and claim its for .325
.404 is nice stuff, too big for anything under 90CC IMO but super easy to sharpen and cuts nice, my 881 wears a loop of it on the 42" bar, but on the 20" bar I have for playing around with its got the 3/8", my mecanil grapple saw will be running .404 when I get it, need a robust chain when its being driven by hydraulics with zero feel of the cut, just brute forcing it
on occasion I will square file an old chain to play with, love how it cuts but takes too long to sharpen, I need to get the double bevel files and quit using the triangles I think, the triangles suck for keeping angles as im too dang blind to see it and you cant really feel it
about running saws over, I haven't done that yet, but I've dropped a few, dad dropped my 200T twice, once from ~70ft and broke the brake handle, again from ~30ft and snapped the top handle in half, I dropped my 261 when a snap cut went bad and ripped it out of my hands, snapped my lanyard too
I do need a saw scabbard for my excavator eventually, right now they sorta sit in the cab with me and its cramped
I quit hand filing for the most part, I've got a stihl 2in1 for 3/8 and one for 3/8lp, do have file kits for all sizes but quit using them (and lost a few I think)
the 2in1 is nice for a quick touch up if I ding one tooth or something but for 99% of my work I run a few loops over the grinder, doesn't wreck the temper like people say it does either
if I need a bucket truck or chipper around the house, I go outside and grab mine, although for most of my trees the bucket can't reach them, and the chipper is 8000 pounds so its a little tricky to get down to the back field
id honestly rather pay another company to do my personal tree work, I've got a 30ft magnolia in my front yard that I may be taking down this summer, every winter a bunch of it snaps off with snow load or high winds, I'm just worried about it falling in the road and taking out the power lines that are about 5ft away
we have 5 acres, about 70% is wooded and 20+ degree hills, hard to walk around on, even harder to do tree work on if it involves rigging or dragging logs