I have a headache from changing between alt-coins but there's no other way to make money 
That's why i like mining at http://www.middlecoin.com. They take all the guess work out of it. The Alt prices fluctuate too often.
(I'm not an employee of middlecoin nor am I being paid to recommend them)
But I prefer Tompool with it's 0% (maybe soon to be 1%) fees, which does it better imo.
http://ctompo.dyndns.org:8083/Tompool/
It depends what form you want your output to be. But having used both, I know which gives the greater relative returns.