Sad to say that you need at least 1GHs now to make ETH worth to mine.... anything less than that will be just to tough.
Citronick,
Are you talking about ethpool only?
Or others pools too ? (like dwarf and etheremin)
One of my fellow farmers with a small 1.4 Ghs farm has just gave up and switched to Nicehash to rent out his ETH hash for BTC.
What is the reason for such a switch ? I don't understand.