There's been some very nice examples sell quickly recently, that Indianapolis one was a peach. The white one in Manukau with all the big ticket items done already would be good buying, but not really the best colour for the E60 shape... If you can get along with 2-doors and slightly more challenging looks, this facelift M6 might be the ticket? Epic spec sheet, and with all the updates the S85 received over the years. Probably the best exhaust for them on it as well, with the Meisterschaft pipes.