If i had to choose again and could afford one i would not consider anything but a VR again.I would never have a 16v again as the power difference just was'nt worth the extra fuel and insurance,too much revving to get anything useable.I certainly would'nt convert an 8v to a 16v just not worth it.If buying a VR6 look for a well serviced late model with the mk4 timing chain guides.I just stripped mine after 150k and guides have virtually no wear at all (See
http://forums.vwvortex.com/showthread.php?4054146-DIY-MKIV-VR6-Headgasket-Replacement-Reinstallation).Regular servicing and inspection is a must on a VR,they certainly ai'nt like an 8v where you can check under the bonnet every 6 months and just wash and check tyre pressures.Engines run hot in a small area so if you get a leak things can go very wrong very quickly.Cost of running a VR is high compared to an 8v but when you drive a good one you will wonder what you ever saw in an 8v !.In my VR i can poodle around in 5th at 30 mph no problem and i do'nt have to change gear if i want to get anywhere,i just floor it and it's there.Iv'e had 2 8v's,a 16v,a vr and now (not through choice) i'm running another 8v colour concept but my VR will be back soon !!!!.