I plan on renting a car in Italy in March. What credit card gives me the best coverage? American Exp

I plan on renting a car in Italy in March. What credit card gives me the best coverage? American Express, Visa or M/C? I know when I rented in Ireland a few years back, this forum told me about the advantages Visa had over the others. Just wondering if it was similar in Italy. Thanks!
The type of credit card is probably lowest fare air flight tickets a lesser of the issues when renting a car in Italy for the reason mentioned by the others. I hope you have already looked at whether you need a car in the first place considering the traffic, parking logistics, rental office hours, the operating cost, the time, alternatives, and the ZTL.
I looked into this - Visa does say they provide insurance coverage in Italy. However it is a catch-22, because the car rental companies and brokers like Kemwel and AutoEurope by Italian law must bundle lowest fare air flight tickets the insurance cost into the price - so you can't take advantage of the Visa insurance coverage option.
FYI: traffic lowest fare air flight tickets cameras are ALL OVER THE PLACE. No matter if you inadvertently commit a traffic lowest fare air flight tickets violation, the municipality will go to the car rental company for your cc info and then the fine will attempt to hit your card. Because the municipality lowest fare air flight tickets does not have your approval for the charges, the card will be declined and you will then hear from the cc. They will tell you there has been fraudlent charges trying to hit your card and you need a new card.
My MasterCard would provide coverage, but you have to decline the insurance offered by the rental company. lowest fare air flight tickets They said that they will cover any excess if I cannot decline the coverage due to Italian law, but they won't put it in writing, so I wouldn't count on it.
As far as Italian law requiring it to be bundled, I'm not sure. I know that you are required lowest fare air flight tickets to have insurance, I do not know if the insurance lowest fare air flight tickets HAS to be through the rental company. Hertz seemed willing to let me waive it (AutoEurope would not), but who knows what would happen when I actually pick up the car (I'm going in May). That being said, Hertz was not willing to reduce the rental quote if I declined the CDW, so there really is no benefit to relying lowest fare air flight tickets on your credit card for insurance in Italy.
In the end, I found the cheapest rate from Hertz using a Continental Airlines onepass discount code, then called AutoEurope and had them match it PLUS include the zero excess insurance. That way I won't have to worry about coordinating anything with my credit card if anything happens, and I got a great rate.