MultiMiner rocks for Rockminers!
Anything specific that makes you say that?
I've been running mine on BFGminer, but they won't overclock to the promised 37GHs, they run comfortably along at 32GHs. Do you know if multiminer can get a little more out of them?
If you set them at 290 for the frequency, I get mine running around 35Gh/s comfortably and 2 running above average between 35.5 and 35.9. I'm running them on 1 instance of cgminer 4.4.0 with 5 antminer U2's on the same instance.
As far as multiminer goes, it's a great program, but it's just a gui interface for BFGminer, so if you're running bfg, your running the same miner you would be using multiminer, without a windows interface.