Nick, I've been looking at replacing the ol' trusty swedish steed. Haven't finished my research on the 900 series. However, there are lots of 200 series on the road and lots of parts and after market stuff (IPD). Recommend you checkout Consumer Reports regarding reliability for those year models. I haven't yet.
Larry, Concur about the manufacturers' cost incentives to go belts and the oil changes.
S, J.R. Brown
1986 280GE LWB Anthracite
1980 450SEL Champange
1981 Volvo 240DL UPS Brown