I've the 3.0L petrol one & of the petrol models its probably the best when you factor in the valve stem seal issues with the V8s.

They are very similar to an e60 in truth, a lot of the electrics are identical. They do wear front suspension components in particular because of the big wheels. I'd also ditch the runflats & get a space saver 17'. I think it drives much better with non runflats.