[indigowhale]

I just sold my 89 420 SEL, identical to the 560 Except for the displacement:

Pros:

Excellent ride
High safety factor
Lots of space
Classy
Not too many gimmicks
Nice acceleration to redline
Parts reasonably priced

Cons:

Legacy design
Timing chains every 100K ($1,500)
Premium only
18 MPG tops
All alloy engine later models, need to keep it cool
Transmission life 175K-200K (rebuilt $1,400 on cheap side)
Eats edges of tires due to worn bushings, hard to align even at dealer
AC can be an issue if R12 and not working
Risky on the ice, if ABS equipped better. Saved my neck once.