As a new geocacher, I will add my opinion. To me, the main point of geocaching is getting me out of the house, and walking in areas I have not been before. To me, therefore, it is more important to have well-maintained caches, than well hidden ones. Whilst I appreciate the occasional challenge, I don't want to spend 20 minutes finding each cache - I want to find it, log it, and get onto the next one, which will normally take me down a path I haven't walked before. I do like the interesting caches, however - the pine cones, the false rocks and the home-made objects. I also appreciate thoughtfulness in the placement of the cache. Searching several ivy covered trees holds no attraction. One is ok.