Personally I would be looking at 75s and 85s as it was easy enough to
upgrade. That said how much are you planning to fly this airplane? A
midtime engine can be a real bargain. However, if you get unlucky....

Running any known aircraft engine much over TBO is a fool's errand.

On a certificated aircraft you can rebuild the engine yourself if you
can find an IA to inspect and sign off the work. This may or may not
save money if you are so inclined. Oopses can get really expensive.