Historically, the clubs from Milan and the Old Lady are the best clubs in Italy. Juventus FC, Internazionale and AC Milan celebrated 36, 19 and 18 Scudetto's respectively.Also in Europe, the Italian clubs left their mark. AC Milan won the European Cup no less than seven times, Inter Milan did so three times and Juventus won the biggest European Cup twice.
However, these clubs don't necessarily win in the best kit competition. Sampdoria and Fiorentina for example had some great kits. But overall, they used to produce some amazing kits in Italy during the '80s & '90s.