Whatever the mileage the Service History is top priority, if it's been serviced in accordance with the manual, then it's been looked after by the former owner/s.
One recently sold on PH 120K with full BMWSH a 2 owner car, last owner 7 years, to me that speaks volumes
Good luck with the search
they are becoming as rare as hens teeth and prices have risen steadily over the past 6 months and continuing.