Tips for Youngtimers

Hello in the round, I have decided to get a youngtimer in the foreseeable future. I swivel between the Volvo 850 and the Volvo V70, thus Bj 1998 – 2006 Whether petrol or diesel is not clear. I would like to see a robust and well-repaired or maintained vehicle, with which one still has a lot of pleasure. Since I am still at the beginning of my research I am grateful for hints and tips. Thanks in advance. Stef