Hi Paul , similarly test drove loads of CLS models before plumping for the xf , I too was disappointed at the rattly interiors and amount of wear and tear showing on some of the trim , if you can get one go for the 3.0 preferably the s model although the 3.0 in standard form is no slouch , not that the 2.7 is a bad motor or slow just with better emissions ( lower tax bracket ) and the increase in bhp it seems a no brainer , around 13k should get you an 09 / 59 with around 60k on , Good luck with the search