Tiki
I'd order a Neptune machine from Kncminer. We have a Jupiter that paid for itself in about 25 days hashing at 600Gh/s. The Neptune will be 5+ times faster at over 3000Gh/s or 3+ Th/s. Trouble is you need to pay now and it might be mid 2014 before you receive your machine. We joined a pool - Eliguis with no regrets. There are other pools with different options. I like the fact Eliguis pays out as soon as you have .17 BTC or more.

That's my opinion and experience - others might very well have other suggestions.

Good luck,
Bill