Definitely C&D Morley's Best. I'm about halfway through my 3rd pound of it (and only 5 years smoking a pipe). Still smoking it 2-3 times a week, and that's pretty often when you only smoke one bowl a day. I could smoke just that if I had to, but I enjoy not having to commit to just one. That being said, when I'm standing in front of my tobacco, not sure what I want to smoke, going back and forth between this blend and that blend, I will hit a certain point when I'm just like, "Screw it, I'll have another bowl of Morley's..." And it's always a satisfying choice.
My second place is either Orlik DSK/Peter Heinrich's DSF, which totaled together equal about a pound, but I don't smoke those anymore. Actually, Haunted Bookshop may have caught up with those by now. Epiphany, too...
I think I've probably gone through more tins of Escudo than just about anything else to date. I could foresee Capstan Blue Flake overtaking it if it wasn't so expensive. Probably Kramer's Father Dempsey will overtake it as some point since it's cheap and so good. If I smoked everything I owned without buying anything more Penzance would overtake them all, since I have a couple of pounds of it on hand and only 4-8 ozs of any other blend.
Y'know, I can't help noticing that goopers sell the most in the U.S., but this thread tells a different tale, it would seem.
Perhaps it's a problem of passion - the level of piping enthusiasm shown by we PSD'ers.
I was visiting with an older gentleman last night & he was reminiscing about an uncle that smoked an OTC cherry blend (he didn't recall the brand), but only occasionally. Not many forum folk are so intermittent in their bowls.
Condor was my only tobacco since I started using a pipe, but it's changed and isn't that nice now.
So after much sampling (thanks Craig) I'm sticking with Amphora full, and Gawith Hogarth cherry as nice change.
It really varies. Once I fall in love with something, I'm ready to fall in love with something else - better tobacco than people. That said, I've probably smoked more Esoterica Dunbar and Mac Baren HH ODF than anything else across time.