Have to throw my $.02 in here. I just finished 80+ hrs of mulching in the Northeast Kingdom of Vermont- rented my brothers new (278 hrs when I started) PT-100 Forestry with my old Fecon head on it. I was very impressed- I ran this thing 12+ hrs a day with only two "break downs"- one I had one of the balancing weights fly off the Fecon and the other I had the air pre-cleaner get pushed off the back hood by a apple tree limb and then I ran it over...so no fault of the PT on either. The AC and pressurization worked extremely well- almost too well- as I had to turn the AC off 3/4 of the time since it was too cold. Cab is sealed well, and the guarding is well thought out. Cooling was excellent- hottest it got outside was 85, but the engine temp always stayed below 180.
things I did not like- when you have the high flow on and full rpm's, the loader arm lift function is slower than I would like it to be. I know it is because the PT's only use one pump- and you have to rob the high flow to run the loader arms. Okay- but means when you have a bigger tree and you want to mow from top down it takes extra time to raise the head. My old 4810 with the multiple pump set-up was way faster for cycle times. Also didn't like the smaller fuel tank. Could only safely get 3 to 3.5 hrs per tank. 4810 I could get 4.5 hrs and never fully ran out. I ran out twice in the PT-100. Also operator error- no fault of the PT.
If I were to get back into mowing, I would certainly be shopping for a PT-100 forestry. heck sign me up for two for under 200K - Not to be critical of other folks choices- just what makes sense for my check book.