Wafflepool and Clevermining publish their average rate of return. I trust them because of that honesty and openness - they don't have anything to hide and aren't afraid to let you know how they are doing so you can choose what's best for you. But some of the other auto switching multipools don't mention anything, so you have to just decide to mine there and hope for the best.
Clevermining avergae 24-hr earnings rates chart here:
http://www.clevermining.com/profits
Wafflepool averages here:
http://wafflepool.com/stats
I remeber you posting this same thing last time too.
I am on my phone & in commute or I would post a screen cap where the owner of the pool has posted on the one of the page in user CP that he is working on those things with a tentative date those things will be implemented.