Not sure if i'd class a Losi XX as vintage really ( as far as performance goes ), as although technically it came out in '93 it had a looong shelf life and was quite capable of winning big even after the XXX came out. I think it was fair to say the XX was one of 'The next Generation' of buggies then, and as is proven now, still a very capable buggy even today.
To me, Vintage is pre-93-ish...so no XX's, B2's, Cougar & CAT 2000's etc etc. These buggies are still quite capable of mixing with todays buggies, especially at club level and even Regional level - as long as you have spares !
For example i ran a Traxxas TRX1, Lazer ZX and Top Force at Caldicots Vintage series last year, and every other buggy was pre-93-ish... original RC10's, Optima Mids, JRX Pro etc etc. As good as they were, they are all a step down in performance i feel from the post '93-ish buggies. Ok Craig Harris hustled a TRX1 round with a 7.5 at an amazing pace, but he could hustle a wheeled brick around pretty quick...
And yes i suppose you could add another 'Generation' cut-off point of around pre '84-ish to take into account Rough Riders, Bolink Diggers, Mardave Apache's, Kyosho Scorpions etc etc...
Sorry, just my own rablings & thoughts on the subject, no offence meant to anyone with more modern 'vintage' buggies - i have plenty of those too...
