I started this thread over 4 years ago...since that time, this has become one of my favorite blends. I bought a lot of it early on, as it used to be significantly less expensive than it's PS counterparts - nowadays, the prices are often fairly comparable.
If anyone is still on the fence, I'd say that it's pretty good fresh, quite good with 6 months of age behind it, and a very fine smoking experience if you can sit on it for 2 years or longer.
There are three post-'07 blends I need to keep on hand - two are Newminster: the Superior Round Slices and the Superior Navy Flake.