I have JBA but I was going to get the Kook's but I ender up getting a good deal on mine. I heard if you are getting a S/C then you should get the 1 3/4 to allow for more flow.
Ohhh so cute. I can recall those sharp teeth and claws when my cats were kittens and they do hurt! I like the pic that looks like your cat is biting the top corner of the screen.