I keep hearing that. I'd love to try the stuff. Only problem is...everyone is sold out. Seems kind of like finding a unicorn at this point.
Truthfully, while Penzance is a very fine blend it isn't worth the crazy prices some are paying on eBay and the like (in my opinion). It's just tobacco and there are SO many other great blends out there to enjoy. Like Nightcap for example! Or, to a lesser extent, Blue Mountain, or Black House. Frog Morton on the Bayou has some distant relationship in flavor. Westminster I've heard is also another great one in the Nightcap/Penzance family. These are all distant cousins for my tastes and much "lighter" in flavor and feel than Nightcap. Others may completely disagree with me, but to me they have a certain "something" that they all share. All are very worthwhile blends.
Hopefully you'll enjoy that Squadron Leader as well! It's not very similar to Nightcap in my opinion, but it IS fantastic and one of my all-time favorite blends. I love the leathery notes. One of the best things about smoking a pipe is that there are so many different kinds of tobacco to enjoy!