Do I need to buy high speed train?

When in Italy, train travel is a unique experience.TrenItalia and NTV Italo provides very well know Italian high speed train lines which run through the heart of Italy. TrenItalia has two major lines connecting most of the cities in Italy in fastest and shortest way.
The trains are part of experience which must not be missed while train travelling around Italy as the top speeds go up to 300 km per hour.
There are mainly two types of Long distance trains of Trenitalia: the Frecce (arrows) and Intercity trains.
Intercity trains also go to medium-sized cities and the big cities so they’re slower and cheaper compared to Frecce which are superfast trains.