I'll choose an old Benz over a new one any day. The classics do it for me. Mine has 210 thou on the clock and feels like it was built yesterday.
If it's survived 25-30+ years, that should be a testament to it's reliability. Of course there are maintenance issues as with any car, but the most difficult thing you will encounter is the availability of discontinued parts (as I have discovered on my 2.5-16.
'88 Mercedes 190E 2.5-16 (George)