Not a great deal in it between the 420 and 500, the 500 has a bit more get up and go, but thats about it.
The 560 is like driving a different car altogether, it's very fast, even by todays standards on a motorway there aren't many cars that can live with it.
Far more toys and gubbins to go wrong on a 560, ASR (traction control) self levelling rear suspension.
I wanted one of these for 20 years, and bought one a year ago, I bought a
560, I love it. But, and this is a very big BUT, it is an absolute money pit. I expected that, I'm restoring it from the ground up including a brand new zero mile factory engine, brand new body panels, a full interior retrim etc. it's likely to have cost me somewhere between £30,000 and £40,000 by the time it's done. But even if I wasn't restoring it to this extent it would have been a money pit just keeping it on the road.
Nothing is cheap, these are all or nothing cars, theres a reason they cost £80K + brand new in 1990 and keeping all that gadjetry working and repaired isn't cheap.
If you want a clean daily runner that you're going to enjoy then sell on I'd say the 420 or 500 are actually better cars (personally I'd go with the
500).
If you want something special for life that you'll invest in then a 560 is the way to go.
Basically the 420 or 500 is like a high maintainance mistress, the 560 is the same mistress with a cocaine habit:-)
Alan M
1990 560 SEC currently in a state of flux.....