I know what you mean.
VWs have got a hold of me too.
I've only ever owned VWs and although I have occassionally thought about buying something else, nothing in the price range has come close to the dubs.
Not even my other half could persuade me away from getting dubs.
Scooby's are tempting, but how long before you get bored again?
If you want a cheap VR6, get one, run it for a while, then pop the engine into a Mk2 when you get bored with the boat.