I have just finished working my way through the Middle Earth sampler.
I agree with 2 - 3 bowls each.
The lowdown - from my perspective.
Old Toby - very light on flavor and vitamin-N - not my cup of tea. Strictly for the ladies.
LongBottom leaf - mild as well, but pretty good. Earthy and relaxing.
Treebeard - I wouldn't personally name something you burn after a giant talking tree, but... it's pretty good. Earthy and woodsy. Mild like the others.
Ruins of Isengard - I like this one a lot. A bit more ecclectic than the previous 3. More flavor, more interesting.
A Shortcut to Mushrooms - my favorite. Very unique. A bit tart, very earthy, relaxing and the faintest hint of mushroom.
All of the baccys smoked well and burned pretty cool for me.