I discovered a new profit switching miner the other day.
It is called Winminer
It works like nicehash and will mine the most profitable coin for your card.
Where it gets interesting is that the earned money is calculated into USD and not Bitcoin. So it reduces fluctuation in your payout.. In a downtrend market this could be interesting.
You have the choice to be paid in Bitcoin, Paypal or Itunes
They have a really simple gui:
You can learn more at
http://winminer.com
Or at the bitcointalk forum
https://bitcointalk.org/index.php?topic=2004875.40
(Note: I'm not affiliated or anything to the service. I just thought it was an interesting project.)
Have fun.