I own both a 123 and 124 chassis cars. The 124 is definetly has better handling and more power. On the flip side to that, I find the interior of the 124 to be cheaper looking than the 123. I am partial to the round vents in the dash in the 123 and the chrome through out the interior. I just wish I could combined the 2 together.

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member