Thanks for the feedback B&R. The problem I have at the moment, is that almost all of the caches near to me seem to be micros or cache-and-dashes, which don't appeal to me at all (so I can't base any future design on them).
I'm looking for pointers, so that as I get out and about I can start to make plans about my own caches. To narrow it down, I already know that I don't want to do anything that involves micros, cache-and-dashes, or urban areas. That pretty much sets the scene for what I don't want to lay down as a cache too.
In relation to the difficulty (and ignoring tiny containers in large areas), what does it mean? Difficulty 1 = container at the base of a tree, difficulty 3 = halfway up a bushy evergreen tree, difficulty 5 = disguised as a treestump in a forest, etc?
I'm really asking so that I can put some thought in to it in advance.