Thing is, WBX's aren't great, neither are 1.6D's or 1.7D's.
Aircooleds are okay, if you don't want to drive anywhere.
Loads of pro's and cons for both.
WBX probably most popular, also the most problematic to get parts for.
early WBX cooling system only ran for 2-3 years, all parts obsolete, very little on aftermarket, so to keep one going it's second hand bits, which is a bit of a mare.
later WBX, some parts are available, but for how long? lots of the parts really needed like thermostat housings aren't available, which again could see you off the road for a long time.
Diesels on the other hand are sourced from most other contemporary VW's, so you are tripping over parts for them.
the availability of sumps etc is a load of cobblers, why would you need a sump unless you crack one putting a rod through the side? not very likely, then those nifty geezers at brickwerks make products to get around the "lack of spares" like this...
Click
At the end of the day, all the engines are "pooh", really, but in my eyes, fixing the bleedin things everytday I would go for a Diesel over anything else.
Run on Diesel, run on veg oil, loads of cheap, easy to find spares, reasonably economical for what they are (big van small engine) and they don't poute the place like then 'orrible stinkin' petrol things.
And, if anyone wants to contest my last statement they are quite welcome to come and stand in my workshop for as long as they can stand it for with a petrol and a diesel.
I bet your eyes bleed first with the petrol, oh and the small that hangs onto your clothes...
