synodontis catfish (upside down catfish) are really cool, but they dont have really long whiskers I dont think, and they really like to hide. I had one that got about 5" and gave it to a friend who put it in a 100 gallon tank and its still alive and well.
Rafael Cats are really cool too, but they eat really small fish if they can get their mouths around them, and they hide a lot too..
You can do a google search for catfish and find all kinds, just make sure they dont get too big for your tank. They sell channel cats in pet stores when they are very small, which is a huge mistake because people buy them as babies not knowing they get way to big and dont belong in a fish tank...
good luck B)
EDIT: BTW, synodontis catfish, like most other catfish, like to be in groups of 3 or more...