Why do think I bought a poverty spec one with no options?
I jest, I bought it because it had a manual gearbox, options didn't remotely interest me, Electrically they're sound, you might get the odd issue with the nav or the heater but they're easily sorted for a couple of hundred. V8s can suffer from dry valve stem seals which leads to massive oil consumption and cat failure if not dealt with, but a couple of grand sees you fixed up for 100k miles. £2K might seem pricey, but that's the going rate for a new DE lump including fitting, so you can see why I say that it's no more expensive to run. BMW do a 'value pack' for brakes and stuff too, which is their way of keeping older cars within their dealers.
Better fuel economy than the 350 as well!