My first asic miner pointed at ZetaCoin for about two weeks. I averaged down my position as it dropped from 800 satoshis down to 150, at which point I was sitting on about 8 million zet. Went to sleep with that whole balance in BTC and woke up to zetaCoin at 5200!! Would have been worth almost $50k at that point.

bitcoinx dot com says about .25 BTC over 12 months

The real trouble here is that there's no store you can walk into and walk out with 8TH/s of power. It's really only BFL shipping actively and their backlog is still over a year behind on the high end machines. KNC, Cointerra and others have big GH/s machines in the pipeline but it's still a gamble if they'll even ship!

5.42 GH/s on my Jally, I have a Cointerra on the way though