Go for the Storm if you can find one, stronger residuals, better kit. Do not touch one that even looks like its been painted, they dont hold up to well in front enders, tends to do the steering and all sorts, this you will tell when you drive it. All Karmann panels BTW, horrendously expensive, front bumper, £500!!!!
Longevity not a problem with vee-rheinmotor, go for ages, dealer or specialist history essential. Driveshafts a weak link, like I say get an inspection from a specialsit in the back of VW mags, its totally worth it, as with these cars (and the golf) if it looks expensive it usually is, very.
Beware of tarted up standard VR6s, they have slightly less power and kit. Storms only came in two colours, Mystic Blue Pearl and a Metallic Green.