Absent a limitless supply of identical candidate cars from which to pick, since this is a USED car, IMO, CONDITION trumps COLOR, every time.

Even more so, in this case, because I have heard these are NOT without reliability, build quality and mechanical and electrical problems, so that makes the particular you example you select all the MORE important with these.

I am assuming these cars ARE NOT "certified pre-owned" Mercedes Benz cars for sale on a Mercedes Benz dealer's lot, which makes it even MORE important, because if things go wrong you won't have a factory warranty to fall back on.

Paying for repairs on these yourself can get VERY expensive in a big hurry.

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1991 560 SEC AMG, 199k <---- 300 hp 10:1 ECE euro HV ...

1995 E 420, 170k "The Red Plum" (sold)

2015 BMW 535i xdrive awd Stage 1 DINAN, 6k, <----364 hp

1967 Mercury Cougar, 49k

2013 Jaguar XF, 20k <----340 hp Supercharged, All Wheel Drive (sold)