During our first trip to Italy in 2006, SWMBO & I discovered pecarino. Wow!

We hardy get any variety of it back here in Canada, but what we can find is now a regular item in the fridge.
Pecarino Romano is what we use in place of parmesan nowadays -- much better flavour for our tastes. And the crotenese from our local Italian shop is the closest we get to "real" pecarino flavour for snacks and sandwiches.
Note to Self: remember to figure out the cheese import rules before our return trip to Italy later this year!