Again, thank to all who took time to answer here. If it's not already apparent, I am a planner and the info here has really helped fill in some of the blanks that just perusing the forums didn't answer. One of my biggest takeaways here is that it sounds like the vintage Mooneys can also be flown "recreationally" - a huge plus for me given my mixed mission. Also confirms my impression that they should stay at the top of my list if/when I move up to a four place. Didn't mention it in my initial mission list, but the in-laws live 180nm away by air but a circuitous 5 hour drive by car, so that 150mph would really be an added bonus to shuttle the kids out there for a long weekend.
Biggest concern for me remains the costs. I don't like to finance toys and my flying budget is relatively modest, so the cash outlay to acquire a decent one plus keep a reasonable reserve for a big repair might still have even a C model slightly out of reach for now. Going to keep learning about them as well as the common concerns (tanks, pucks, cage corrosion, etc) and try to be in a well informed position if one becomes available. I live in the northern Philly suburbs, so I may drop into Robbinsville or Lancaster and introduce myself to the Mooney gurus there.
Thanks again.
-Jim