There's no clear cut winner because:
A. The most beautiful pipe is the one that is delivering a beautiful smoke at the moment.
and:
B. I own very different kinds of pipes and appreciate them on their own terms.
This long Canadian by Scottie Piersel is stunning:
as is this Paul Tatum volcano:
but they're very different than this Preben Holm carved Ben Wade
and they're certainly different than a traditional English pipe:
and nothing like my Castello Occhio di Pernice
not to forget the somewhat strange and wonderful
How could I just pick one.