Sorry, I didn't read the title, I just clicked on the thread. There are plenty of luggage stores. Rimowa sells hard shell, metal luggage, and quite expensive. It's great luggage, but hard shell is not to everyone's taste. Many people love Tumi. I find their luggage to be too heavy, and overpriced. It's again a matter of taste.

I like Briggs and Riley. They are several hundred dollars less expensive, but are still a top notch, highly rated product. It is almost indestructible. It has a lifetime guarantee for damage, no matter what caused it, no questions asked. Consider going to Rinascente. They are the main department store in Rome for picking up most of what you need. It's on Via del Corso, the main shopping street, within walking distance of Monti (great area to stay). If you go there you should sign up for the Rinascente card. It's not a credit card, it's a discount card, and Rinascente is all over Italy. With the card you get a nice discount whenever you buy anything. You get an even bigger discount if you buy something during the week of your birthday. If you spend over 500 euros they will deliver what you buy to your hotel. If you buy clothes that need tailoring, they will tailor it for free. A woman can reserve a beauty treatment and make up session for free at any time if she has the card. They have a decent luggage selection, including Briggs and Riley.