As a A8L owner, the Lexus is the only car I would want to be caught in after it reaches 100k miles.
Thing most people don't account for in high performance car are, bigger powerful motor = bigger powerful brakes & rotors = suspension = and many other high performance items that you want know until the Dealers bams you across the head.
Lord know I loved my A8L, but they are not everyday hard driver cars. 2 or 3x a week and long trips.
I was looking at the m56 myself, but that insurance is going to hurt you feelings. Get the m37 and sports rims bruh.