Jeff, I have 3 044/440s and 3 046/460s. For limbing work, the 044/440s are noticeably lighter. The dry powerhead is about 3/4 lb less, and fully fueled almost a pound. You may not notice it much bucking, but you will if you are limbing.
If you are not getting them ported, you can often get the 044/440s to run just as strong as their larger brothers, put a ported 046/460 is a breast, not as strong as the 90 cc saws, but not too far away. They are really good bucking saws.
I generally prefer the 044/440 powerhead with a 20" bar, and the 046/460 with longer bars.
That is my 2 cents!
