My favorites change constantly, I have everything from M&M Corn Cobs to a Bang, I have had lots of Dunhill's, Upshall's, and other higher grades, mostly I sell or trade them at pipe shows just for the fun of it. I keep pipes that just seem to smoke good for me, regardless of who made them. I am now more interested in the tobacco than the pipe, I like to experiment with combining tobacco's for different taste's, for me its just fun, fun, fun.
If I had to choose and no other pipes would ever be manufactured.....
Not possible.
But, Claudio Cavicchi, followed by Roberto Ascorti's father... Peppino Ascorti. Roberto is good but he ain't his father. Next two would have to be Tim George (TRG Pipes), and Uncle Arthur.