Hi. I own a 1643 and last summer used it for some logging. The biggest tree I logged with it was a 55 ft , 16 inches diam. green polpar ( Full of wather, in may) used my Farmi winch to bring it back to the trail, cut the poplar in two and attached it to the winch on the 3 pt link..put the tractor on low (Hst ) and I was surprised to see how it was easy to pull, a few hundred feet farther, changed range to medium, and it felt as easy........so enough power.
I also use my tractor to mow and just love it. Used it this winter to plow ......what a dream.I love HST so easy to use, so precise..so.. so..so everything.(many heavy machinery use Hst without any problem). On my opinion, feel confident. If you use a snowblower, no gear tractor can give you the precise speed you need not to overload the blower, a Hst has infinite speed. In the wood If I may suggest something take care, low branches or stump could do damages to your hydraulic tubes or filter, so use a logging winch to do the dirty job, a lot safer than going in bushes to pull a tree ( just my opinion ). Good luck. Roger