I've got enough saws to last me for a while, but I'm always looking around for more...yesterday I plowed snow, today cut a load of firewood with Jonsered 670, Homelite Super-EZ and Husky 51 recently resurrected from junk pile.
Favorite? None! Except maybe one of the old 1949 McC 3-25's inhabiting the barn. heavy, slow, loud, hard to start, don't run good in the cold...but kewl.
Maybe I should mention the Homie 330 that sits in the hall of fame (barn): I was going to school, landlady needed a tree taken down, but couldnt afford an arborist. I volunteered if she could find me a chain saw. Her Brother had a Homie 330, but was afraid of it...and also wanted a tree down to let more sun into his and a neighbor's garden. I could have the saw if I could get both trees down without hurting anything.
Not much story there for you real arborists, except I suppose I cheated someone out of a fee. But I got the saw, and I made quite a fair amount of money with it for sevearl years. The wood from the brother and sister's trees was sold as firewood. I also work-studied for the college as a groundskeeper and talked the head guy into letting me take out a row of trees where they were planning to expand a field-house; the contractor paid me for this and I also got to sell this as firewood. I also milled one of the trees into a wide, burly board that got made into a sign, and got paid extra for that. And so on, for several years...even while I had "real jobs"!
That 330 was a cheaply made, consumer quality saw, but it held up with just basic maintanance for a long time. I still have it, it looks like its been through the wars, but it still runs, sorta, considering it's got about a thousand hrs on it! Maybe that one is my favorite!