I think I agree on the C55. It should be less to maintain and although the W211 E55 would be roomier and quicker all around, I lose nothing to my '91 E34 M5. And the overall cheaper cost to acquire and maintain the C vs the E means I can keep my M5 off the street more. I just don't know how the AMG and M cars would behave in the garage together. My M will probably hate me for it!
