I bought a 2005 brick last year and liked it a lot, so I bought a lot of 10kg of the 06 bricks for aging. Although I had both tea today, my focus was away from tea, so I can't give accurate tasting notes at the time being. Pictures below show the difference of the two.
Left 05, right 06, both look about the same, however 06 seems a little less compressed than 05. I can break off the 06 rather easily in large pieces of leaves.
Left 05: Small broken leaves, this could be from my clumsy technique of breaking the brick, also I am currently prying the middle of the brick.
Right 06: Some whole leaves can be seen, consist of both young and old leaves.
Closer look of the 05 wet leaves.
Closer look of the 06 wet leaves.
Both are similar in color, light amber.