I just caught this thread and am smoking a Dunhill bent group 4-one of the first Dunhill's I've purchased (estate).
Along with everything that has been mentioned about Dunhill already, one point I'd like to make notice of is their light weight. Every one that I own weighs under 60 grams, most around 40. (to be truthful, I have not weighed them but I am sensitive to weight). In addition to their classic shapes, the stem work on every one that I own is a pleasure. I do not do well with roundish stems because I'm a clencher. Dunhill stems are thin and generally have a comfortable button on the end, just easy to hold onto without drain on my jaw. Even my Oom Paul, the largest pipe Dunhill that I own, is just a pleasure to smoke.
Yes, they are $$, and no, I have not purchased a new one, nor do I intend to. There are so many estates available that I do not find it necessary to own a new one.
I also am very fond of James Upshall, and clearly they are selling at much lower prices than Dunhill. The Upshalls that I have also have nice thin stems and are easy to clench and smoke very well. An excellent value if you enjoy an English style pipe.