I got a single-cup Keruig for a gift, but found that when it gets used by several people in short duration, condensation builds in the electronics, and shorts it out. I returned 2 of them for replacements before figuring out what was causing the problem. My daughters like to use it for tea, so I normally use an old Corningware 6-cup percolator. We use the reusable cups....While I can certainly rationalize justification for being much less of a tree-hugger for other things, I choose to be too much of a tree hugger to enjoy the full Keruig experience.