maybe this will help.............he would be going from a Strong 65 PTO hp to less than 50 so that in itself would be monumental then to drop 2000 to 2500 lbs is another deal - have you ever mowed with a 7 foot RMM and less than 50pto hp...........that's not fun!!!! im talking weeds/grass tall as the tractor not some grazed pasture that needs topped, we get 35 to 40 inches of rain around here so its not thin when you go to mow it - not to mention row crop height vs step through utility height, that's another can of worms...........
his main use would be utility, hauling things around and loader work and then mowing fields of CRP around the edges etc.....his wife using it a lot while he is doing other things - that's the reason for the hst........personally I would teach my wife to run whatever we got but that is his decision and what he wants and I do understand it for loader work, an HST is a no brainer, shuttle is not bad but its not HST - yes the bigger older IH were good for that time but their age is a concern if you could even find one in descent shape. The Mahindra 3550 wouldn't be bad as far as weight goes but you are under 40hp with the HST@pto so that's definitely not going to work - he doesn't want to have to buy all new implements and mow with a smaller mower either so up over 50hp was a low as we figured a guy would want to go w/out feeling like you are on an 8n ford with a 5 foot rmm clutching it every 15 feet trying to cut weeds and keep from killing it that is nothing more maddening than not enough power and wasting time.
I will keep working on him, if I needed a tractor in that range I would be getting a power shift with left hand reverser - not sure what a syncro shift is but I presume something similar? I would not even bat an eye at these little utility boogers I would get a bigger tractor period for many reasons.
Thanks for all the options but I just don't see much with an HST over the 50PTO range. there are TONS of great tractors with syncro/power shift trannies in that range and even slightly used ones with great prices as well but he isn't interested so he will have to make a choice.