When I smoked English blends, Penzance was one of my favorites, it has a unique flavor and some nice sweetness for an English. Back then it was not an issue getting it, everyone carried it and it was readily available. Back then I also tried Stonehaven but did not care for it. I don't believe I gave it a fair shot, and probably smoked it in too large a pipe.
Fast forward to a few months ago, I received a sample of Stonehaven, cube cut it,dried it properly and smoked it in one of my group 5 flake pipes. I fell in love with it and then began the hunt. I now have 11 plus pounds in the cellar and will probably add another 3 or so. It is in my top 3 Vaburs along with Solani Silver Flake and Mac Baren ODF. It is a very high quality tobacco that has a unique taste, either you like it or you don't. Now for me, making phone calls to track it down is not a big deal. I honestly like the chase because when I do score, I am like a kid on Christmas. If I still enjoyed Penzance, I would chase that one down as well. I have found many hard to find blends buy calling small mom and pop tobacconists in the low tax states, people like this with little to no web presence are grateful when I call up and order 5 pounds at a wack. If making calls and tracking hard to finds down is not your thing then there are plenty of other great blends out there.
I think that if you find a blend that you love, it is worth going after. Yes it can be a pain but I would rather do a little work than be without a favorite. Now if you have never tried Penzance or Stonehaven and you are not willing to do what is necessary to get them, then I would recommend not trying them in the first place. Why fall in love with something and then get yourself aggravated because it is a hard to find blend.