Before I get into this, I want it to be known that the only Italian pipe I own is a Savinelli, a far cry from the makers I'm about to go into. All the things I'm about to say are all based off of what I've read/heard, not my actual experience.
Ser Jacopo, is generally held in high regard. I've heard only good things about them, especially their ariways -- they're said to be nice and wide open, whistle free and a dream to smoke. I'm sure you could find some that are outliers, but in general you'd be hard pressed to be disappointed by one. Their older coral dot marked ones are supposed to be amazing smokers on the estate market at a good price.
Ardor, to me, takes their artistic license a bit too far. i admire their willingness to try different things and experiment. Though, I also understand there's a reason they sell 'em, cause people buy 'em! It might be your cup of tea, but I'll take a raincheck. I also hear their airways are a little more restricted, so depending on your preference you may want to take that into consideration. Note that I've only heard that about them a few times here and there.
Mastro de Paja is another maker that I've heard many many good things about. I really don't recall ever hearing a bad thing about them, but that could be part of the American market being relatively unaware of them. Classic shapes, with a little flair here and there. What's not to like?
A few other considerations in the same price range, give or take a little bit are Radice (like Tim said), Cavicchi, and Don Carlos. All three of those makers I hear great things of, and I aim to get a Cavicchi before too long myself, I love hos work. If I were in your shoes, I'd probably look at Cavicchi's work. You could spend an arm and a leg on some of his pieces, like his 4c's, but he has other pieces that aren't even 1c that still have splendid grain! Bottom line is if you're going to be spending $200+ for a pipe, be open and don't accept anything less than what you're looking for, but at the same time keep the door open, allow yourself to shop around.