Too many cat coins...!
CatCoin
KittehCoin
NyanCoin
Whats next? a SHA-256 Feline Coin!?
CatCoin was the first failcoin (Seriously, BTC specs?) of 2014.
KittehCoin was a massive pump and dump (Was pretty good for me though

)
NyanCoin has good devs, community support (even from DOGE), and is licensed by Christopher Torres.
When you compare these side by side, it's not even close.
I was there from the very beginning for all of these coins and I read practically every page of the forums for each one. What you see coming out of NYAN is a whole other league compared to what Cat and Kitteh tried to do.