I agree with PCMiner. If you want to know what is the profit difference between all the pools for the last 10 days this is a useful link: https://docs.google.com/spreadsheets/d/1VOAhFX1XRizdaTp71qnYI5pRh9VIZEQ51LHuGUmxri0/pubhtml

Make sure you watch Profitability comparison - 10 day average.

Also LeaseRig is not a thing to consider as you have to pass through a ton of applications, verification and approvals to start renting rigs.

I'm also waiting for X11 or Groestl versions of clever. It seems that these newer algorithms are speeding up and mining is less noisy and cooler