I've never owned a W124, so I can't comment on that. But the W126 was a superb car. If I found a minty 300SE or 300SEL, I'd be very tempted.

Not to mention the 300s carry on a classic 30-year nameplate: MB had a 300SEL all the way from about 1964 up till they went to the letter/number format, e.g. S320, E420, etc. (Except for the W116 years, I think.)
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__________________
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-- Paul W. (The Benzadmiral)
('03 Buick Park Avenue, charcoal/cream)
Formerly:
'97 C230, smoke silver/parchment; '86 420SEL, anthracite/light grey; '84 280CE (W123), dark blue/palomino