I am debating whether to keep my '99 540i/6 and SC it or go for the M5. Is the M5 vs the 540 be comparable to like the 540 to 530? I know you only have the M for a day or so, but do you think the M is worth the extra $20-25k over the 540? What year is the M5? BTW, how much did you sell your 540 and how much did you buy the M5? Glad to see you'r happy with the mew toy. Thanks Derek