I typically buy vehicles that are getting close to 100k, I usually look for 50-75k miles, drive them for another 60k miles or so, then turn them over while they still have some value and get something else. You should easily get 130k miles out of pretty much anything built today before you start having to spend any money on repairs. Because I usually turn them over in that range, I usually have spent nothing, or almost nothing, on repairs. Exception to this is a little beat around old truck (91) that I've got around the house that unless it completely craters or gets in a wreck, I'll probably keep - the thing gets nice gas mileage, ridiculously easy to repair, parts are cheap, reasonably comfortable.
I don't think you'd go wrong buying anything at 75k or less. Depends more on how much you drive. If you only do 10k miles a year, 75k is going to get you 5-6 years down the road before you really start seeing anything to fix (in general).