BMW 5 SeriesThe superb-handling 5 Series is still the one to beat in this class, having set the benchmark for driving pleasure. Punchy engines give the 5 its sporting edge and it's also spacious and comfortable. The iDrive control system doesn't appeal to everyone, though.
Jaguar S-typeSmooth engines and a supple ride make the S-type a fine alternative to German opposition. The beautifully refined diesel is our favourite, offering ample mid-range pulling power. Rear headroom and boot space could be better, but otherwise this is a strong contender.
Mercedes E-ClassEverything you'd expect from Mercedes: excellent drive, refinement and quality, plus a fine range of engines. It is not as exciting to drive as a 5 Series, though, and there are some question marks over quality.
See the February 2006 issue of What Car? magazine for a free 100 Secret Cars of 2006 and Beyond supplement.