2012 Sportsman 800 EFI to 2015 Sportsman 850 or not?

Just curious if the upgrade is worth it or not. I don’t do alot of trail riding mainly used around my acreage however I do plow snow in the winter and pull logs out to cut up. The 850 does have power steering which would be nice, not sure what the other differences are besides the power and beefier chassis. Any input greatly appreciated. Thanks