I think a compelling reason to hit up the six-cylinder is because of the short-wheelbase...Such as in the 300SE.

Some of us don't need the extra 5.5 inches. Some of us like the proportions of the standard wheelbase models when we turn around and steal a glance back at our cars, as we walk away from our parking spots.

The long hood, and shorter tail-end can be highly appealing aesthetically.

Also, it feels more lively and controlled when you oversteer in the bends. Probably has something to do with that shorter wheelbase? Feels more alive?

The six-cylinder may have less hp....But it is only down 24 bhp. And it has a 3.46 differential to more than make up for the loss. Plus a lot of M103's seem to perform hotter than the factory's initially claimed 177.

Me personally...I'd only take a 560 with the self-leveling suspension, and all the toys, if I had to. The 420 is ok, but to me..It bothers me..If you're gonna have the v8 in a class you might as well get the top model...

The 300SDL was the top model diesel....
The 560SEL was the top model gasser...
And...The 300SE was the best SWB W126 made for North America.

Now...If the 560SE HC were available stateside, obviously I'd prefer that. But it isn't...Even still: The screaming six is no slouch...It is a competent performer.

That's how I see 'em. IDK

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1987 300SDL (324000)

1986 Porsche 951 (944 Turbo) (166000)

1978 Porsche 924 (99000)

1996 Nissan Pathfinder R50 (201000)