Randy, that second pic is awesome! It would make a nice avatar.

And re: cats who like the tank, our big fat not-so-bright cat grew accustomed to the 42g brute full of RO water that we had in the kitchen for about a week and she especially enjoyed lying on top of the tightly closed lid and napping there. Imagine her surprise on water change day when she went to make her usual leap and this time the lid was off. Splash! NOT a happy kitty!