Pre-paid SIM for Italy

[cleung]

I'm traveling to Italy next week and I have an unlocked 3G phone. I read that both Vodafone and TIM have pre-paid SIM cards but does at least one have them have pre-paid data plan as well? Earlier this year, I was in New Zealand and Vodafone NZ has an option where you just pay something like NZ$1 or NZ$2 for 10MB of data every day and you don't even need to do anything special to sign up. Thanks.