i love my 4 banjo cats, and my little bumblebee cat, and all my many botias, and my eels, and my plecos and my sun cats, and and and....
*sigh*
well, i guess as far as what i own now, my pictus cats are my favorite. i have 2 four-lined and one spotted, and my wife just got 2 angelicus pictus cats from walmart... they were just too sad looking to pass up. one is missing an eye and the other has bent/broken whiskers, so we decided we should buy them both and put them in the Q tank for a couple weeks. theyre eating well and seem happy enough... just gonna watch for the ich. i hate walmart!
as far as all time fav: blue chanel cat. i had one when i was a kid. i got him at a lfs when he was about 2" and raised him for several years 'till he was about 15" and then lost him when the power went out and i was not there. of course i have since learned how big they get and decided that i shouldnt keep one, but i sure do like them
however, i have read alot saying that they will eat whatever they can fit in their mouths, but he was very good natured and never ate any of my smaller fish. i thikn he was a special case though
just got lucky with him.