I bought a new Bitfury Twin Chip for $82. It was advertised as a 4 GH/s miner but I've only been able to get it running at 3.5 GH/s. I'm now running 2 different miners simultaneously. I have my 11 Sapphire Block Erupters and 2 Antminer U1's running off the Bitminter client... then I have my new Twin Chip and a Red Fury running on cgminer... so I'm connected to two different workers on the same account.

-==[MINING STATS]==-
[Ghash/s] 13.8 GH/s
[Total Mining Bitcoins] 0.00801293
[Canadian Value] $4.57 (+$2.53)
[Total Namecoins] 0.02446283

-==[CEX.IO STATS]==-
[Cloud Gh/s] 3.46955151 (+0.11147599)
[Total Bitcoins] 0.00531903
[Bitcoin Value] $3.03 (+$1.43)
[Total Litecoin] 0.03028220
[Total iXcoin] 0.04186252
[Total Devcoin] 1.83487648

-==[Total Status]==-
[Total Bitcoin] 0.01333196
[Total Value] $7.60
[Hardware Cost] $520