As far as this goes I would have to disagree. I know I'm bias becuase of owning a W8 but this is not entirely true. I've worked on and/or with VW-Audi most of my life. While yes the W8 is absurdly complex to work on, it is by no means the LEAST reliable. The 2.8s from what I remember were very very prone to head gasket failure, while the 1.8t always has that sludge issue lingering over its head.
For badmonkey, as far as my 2cents are worth, my only real concern would be if it is a tip model, those from what I've come to know had some form of an issue with heatshields, not too familiar with the issue but it is a problem I know of. The cam issue stated by beaumisbro is in regards to the screen that covers the cam gear/variable controler, it can get gunked up, but like anything else, so long as your using oil that isnt crap, and dont go 8k miles between oil changes you shouldnt really be worred. Mine currently has 127k on it in a 6 speed 03 wagon, I use valvoline maxlife 10w40 synthetic blend, and running on that the car is happy all the time, and I am by no means a gental driver, in fact this march it will begin its first autocross season.
Regards, WS