the 441 isn't too bad of a saw if you're looking for a big firewood saw. haven't dealt with a single logger that likes them, at least more than the 440. they aren't bad to run, but have very soft mounts, like a husky. gets really floppy if you're using any bars over 24" or so. the big drawback is that they are as heavy as a 460, and are a pain in the ass to work on compared to the older saws.
the 440(again) and 460 are on their way out. dealers are limited to stock on hand, after that they're gone. good news is that the 461 that replaces the 460 is more or less the same familiar saw, they just modified the top end for the most part(not internet hearsay, i've torn one apart to check it out). they're good runners too, and don't weigh any more.
you really can't go wrong any of them in my opinion, my bias still lies with the 044/440 because they've got such a proven track record and are lighter than all the other options you've listed.
