Vespas are overrated just like Lambrettas are. Both are expensive to maintain and parts are difficult to find especially for the vintage ones. The vintage Lambrettas are just like the cheap Chinese bikes. There always breaking down. One needs a chase truck just to have parts on hand for they break down in the middle of nowhere.
I've heard the same said about XKE Jags and Porsche Speedsters and BMW 2002's, Alfa Romeo Giulia 1300, Fiat 128, Mk1 VW GTi's, Saab 96, etc. They're still classy & fun & I'd love to have one, new or old. The new Italian and French scoots are beautiful.
An unmolested Super 8 is pretty cool, too.