I agree with jhowell, in that my favorite pipe is circumstantial. If I'm smoking a pipe and thoroughly enjoying it, that pipe and blend soar to favorite status while that bowl is lit. If I had to pick out ten or twenty pipes only and trade in the rest, I'd give it my best shot, but I'd miss the particular features of the others on into memory. Many pipes that are less in price, design, gift status, or special features have an aura. Some of my old U.S. factory pipes have the piquant nostalgia of a '57 Chevy pickup. They might bring five bucks on eBay, but they sure can cook a bowl of burley. Does my heart throb for my treasures, the ones I couldn't get at that price again? You bet.