Bought with 75K miles on it, nikasil engine block replaced with alusil at 46K mi.. It has incredible power, comfort and highway cruising ability and is extremely well made. You can't beat the classic BMW four round headlights look that these cars have. The V8s do have some problem areas (radiator, intake manifold gasket leaks, valve cover gaskets that leak with age, etc)but any buyer that does his/her homework and buys a solid car won't regret it.
The power can be addictive and really comes on strong above 3500RPM. Overall quality of materials and solid structire make newer, cheaper cars feel like, well, cheaper cars.