If I have a choice between Av or ES at the same price which should I choose? Thanks

If your route has both and the times are same, then no difference. Same type of trainsets, same speed.

The AV trains will have at least one portion on real high-speed tracks, like Rome to Naples. If you're going on that part, or Milan-Turin, then doesn't matter.

I will be going from Florence to Rome and there seems to be about 6 min. less time with AV.
Is one more comfortable than the other in 2nd class.

All ES* and AV trains I see between Florence and Rome take around 1:35 - 1:37. Like I said, same train set for most (ETR500; except for a few ES* that may use the older ETR460), same speed.

Just get the one with the schedule that fits you.

Difference is that a AV train on this route will continue to Naples on the highspeed track. A ES* most likely terminates in Rome.

Are you talking about the 10:10a ES* that takes 1:45 rather than 1:37? This train <b>does not</b> depart from Florence Santa Maria Novella, the main station, but from Florence Rifredi, which I have no idea where it is.

I can tell you that the 13:20 ES9311 comes down from Bolzano and is likely to be on the older ETR460. Take the 13:31 one instead.

Thanks Rkkwan,
I had not even noticed that the train left from a different station.
Thanks for that tip.
So looking at other options both EV and AV are same amount of time and same price. I thought that maybe since I hear the AV are newer they might be nicer????

AV is a <b>new service</b> on the highspeed tracks. But all the existing ETR500s can run on both highspeed and lowspeed tracks, and they're all new and nice.

AVs are not <b>new trains</b>.

Thanks Rkkwan,
I now understand.
Like you said earlier then I will get the one most convient to my timetable.

Supposedly, the AV trains are updated to include more space and power points to appeal to business travelers. Also welcome drinks are provided in 2nd class.