Should I get a eurail pass to travel around Italy on a budget? If yes, which pass?

I am just visiting Nice in France and want to go from Nice to Venice by train. After that travel around Italy on train. Have a tight budget. Should I get a eurail pass or get seperate destination tickets?
In Italy I intend to use the train for Venice-Florence, Florence-Pisa-Florence, Florence-Siena-Florence and Florence-Rome. Could I get cheap tickets between these places if I dont have a eurail pass. Also, in Nice, will want to make a day trips to Monte Carlo and Cannes. I am already above the age of a student pass and travelling with a partner. Will it be cheaper to go with on the spot bookings of train tickets or with a pass? Thanks for all suggestions!

if you get an italy pass you still have to pay fro the train from france to italy, depends on how much train travel you plan on doing in italy.
lots of travel pass
little travel just two cities seperate tickets

Point-to-point second-class tickets for all of that, excluding the day-trips from Nice, would run about $225 USD per person. A pass for Italy only (Trenitalia Pass), one person, would be $198 (including an add-on day), but you would still need to pay about $50 for the part of travel outside of Italy from Nice, so $248 USD total.

It is possible that a rail representative could advise in how better to use such a pass to your advantage; however, point-to-point looks somewhat cheaper. Passes generally only save a lot on long journeys, although in someways they make travel more convenient as they are easier to keep up with.

NO! Based on the amount and distance of travel you plan to do, don't get a pass. I travelled much more extensively in Italy without a pass and it was cheaper and there was more freedom that way. So, pass on the pass...

i think is better you use normal ticket... from city to city
and day/weekticket for bus and metro in the city

For your in Italy travel you can go to www.trenitalia.com and then select the "promozioni e offerte" there you select "happy train" and what region you're leaving from. You can get tickets for a third of what they normally cost. I saved about forty euro going to venice this way. I'd say the eurorail pass is kind of a rip off, but that's just me.