I really like my MS251 Stihl for a small saw. I am running a cheap 3/8 50 ga. Bar and semi chisel anti kickback chain which works Great for debarking logs on my mill and other small jobs. I put a floating rim drum and sprocket on it when I got it. For the price and the fact it is noticeably lighter weight than the 260/261 Stihl and a couple hundred less $ . It's just a nice little saw. I've run , I don't know , 25 to 30 plus gallons of saw gas thru this one. It's my 2nd 251 . And I just bought another one from a friend. That should say something about them.
I like my stihl 241. It was nice in stock form. I got it ported and I like it as much as my ported 362