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.
You need larger hash to mine because of the difficulty levels towards epoch #150... maybe not a problem for the big farms but if you have only a couple of rigs 750mhs-1ghs farm... you need to wait longer for your rewards.... and diff level is getting worse. This applies to all ETH pools...
Rationale:
Switching to the other Ethash coins could be a better bet but you need a hold strategy and accumulate those coins (eg. UBIQ, DBIX).... OR easiest way is get BTC upfront by selling your hash to buyers at Nicehash, and forget about keeping track of all these coins.