I'd go with ZenPool, it seems to consistently have much higher payouts then any of the other pools available to mine on.
I am interested in the hashlets in Scrypt but not in sha-256. I agree with holyterrorboss, no one will mine for sha-256
Just to let you guys know "The Hashlet is designed to be a digital cloud miner for Scrypt mining in a multipool giving you the maximum profit directly converted in Bitcoins"
Just a question guys before i start my investment. If i pay for 1 MH/s $15.99 how long is the contract going to be?