it changes everyday, just use a multipool if you dont want to keep track of which coin to mine on what day or use coinwarz.
i'm using Trade my bit or clevermining at the moment. I'm sure if i thoroughly read these forums and looked into all teh coins more deeply there is more money to be made but i dont have the time to follow it all that closely.
Hmm interesting. Coinwarz is quite useful. Currently it say neocoins are most profitable. Anyways, has anyone figured out why you can't (aren't supposed to) directly deposit funds into crypsy from your pool? Because if I'm going to start multiming, I can't download 50 wallets.