Coinchoose is a neat gimmick, but there are a lot of profitable coins that don't show up there. Not sure if this is the admins preference, bullsh*t politics, lack of updates, etc.
It is more like there are 10 coins created every minute and hard to keep up (let along find a nice block explorer plus exchange for the coin). Plus many coins don't get on an API with an exchange so I can't list them (CoinEx and PhenixEx don't have API's yet to get order data). I try to have every coin on Cryptsy, BTC-e and BTER.com with the exception of the CPU only coins (because they don't lend themselves to a good comparison between GPU mining coins).
What coins specifically am I missing?