Go for the 560!! Of course I'm partial to big V8s.

Can't beat the old-world build quality, powerful/smooth V8 and the classic lines of the 126.

My 560 has been inexpensive to own -- I do some of the work myself which keeps costs down of course. Lots of room to wrench and everything is pretty straight-forward. With all the brain power on this board and the shop manual, many jobs are "doable".

The hydro suspension doesn't worry me -- rear spheres aren't that pricey and it's a DIY job (I'll prob tackle it this summer).

Yeah, there's the timing chain/rails issue -- but I won't worry about mine for another year or so as we only put on about 9,000 miles/year.