the E39 M5 has been referred to as “the best motor car on the planet” ….. after owning a 1995 E34 540i with 6 speed manual transmission i can understand how such a claim was plausible and not simply hyperbole. the 540i was as close to perfection as one could expect from a manufactured good. i regret i have never driven a E39 M5 nor the monstrous E60 though i can imagine they are good…. very good. i considered purchasing a E60 M5 but after comparing performance, and considering timelessness, engineering and style i chose a 2009 porsche 997 S as it is a keeper for life where as the M5 will always just be a souped-up sedan, it does not have the pedigree and heritage of 60+ years of direct engineering & design refinement that the 997 benefits from eons of perfecting the 356 and 911…. plus there is something just really cool about having a rear-engined super-car.