Sorry, I just found your reply. Having some analysis paralysis that's for sure.
Flat ground, 1/2 acre and 6 mature Norway Maple trees to go around. Not in a hurry but needs to be bloody easier and faster than when I last push-mowed it, that took almost 2 hours because of all the broken twigs and maple keys littering the lot. Need about 10 years if that's reasonable. I expect a heavy fallen leaf load come autumn as well.
Read all about the low-end sealed-for-life Tuff-Torq hydrostatic drive failures but apparently you can mod them to accept a drain plug for maintenance and synthetic fluid change. I do know how to maintain equipment so that's a doddle.
There's a Cub Cadet dealership around the corner from me with a nice XT2 LX42 for $5K. 42" deck will just fit through the fence gate so that's max width. It has a fabricated deck instead of stamped.
There's also a JD dealership in Chatham but JD seems overpriced for what you get. Maybe an S220 would fit the bill but it has a stamped deck.
I also saw this old
Cub Cadet 71 but it's only 7 HP.