I can't speak to the really new ones, but my '07 Mazda 6 (manual transmission) is so fun to drive, I don't think I'll ever want to part with it. It could be the best car I've ever owned.As a prior 6 owner, I would say the interior is nicer than a Camry, and its fairly peppy if equipped with 2.5 Turbo engine. Total dog if no turbo. I wouldn't say that it was particularly fun to drive.
My 1999 Passat 1.8T was based on the A4. When I'd lie on my back underneath it, everything was stamped with the four rings. That car was an a character filled, blast to drive. Too bad it was the most unreliable car I've ever owned.