I have read where many Italiaphiles claim Illy coffee is the best in the world. My experience with caffé is that the brand of coffee is important but the barista is just as important, if not more so.
Illy bars are spread across Italy and many other countries of the world. Ascoli Piceno has two in the centro storico and both make a good caffé. However my experience with Illy bars in other countries has not always been pleasant. For example in Charles de Gaulle Airport in Paris there is a large Illy bar in the middle of the international terminal and the caffé I had there was very bad and very expensive. I have also tried places in the US that advertise the use of Illy caffé but again my experience with caffé in America should be well known to regular readers.
Illy is one of the better Italian brands available in the US but here there are so many choices that are just as good, if not better.