S80 V8 - mad, bad or hard to keep

[DSLiverpool]

I like my barges, after a 760, GS430, 730, turbo R i think I see a trait, well a few years ago I fancied a S80 V8 with 35% off but it didn't happen however a 2008 really nice one has popped up near me for £7,500 and I'm tempted.

Anyone got an insight? Is the 4wd so weak it's useless? Any other weak bits ? I know it's very quiet!