The only thing keeping me from using it full-time right now is something that I think may have more to do with the R-Boxes than Minera. For some reason I can't get the bfgminer in Minera to see the R-Boxes. The official cgminer in Minera works with them, but they have a 30%+ error rate with it so I always end up going back to Minepeon with bfgminer 4.3.0. I don't really know what to suggest there since I know individual devices can be difficult to deal with. Heck, even with Minepeon and bfg 4.3.x which has worked best for me and the R-Boxes I still need to shift the R-Boxes around the USB hub (I have 4 R-Boxes) every once in a while. I really hate those things

Oh, and I had no minerd problems with 0.3.1.
mmm I can't understand why the bfgminer 4.3.0 from Minepeon should work better than the 4.4.0 in Minera. Does it use a forked version?
I think nwools is going to try intensively Minera with fews hardware to test something, hope we can ask him his impressions and suggestions soon.
PS
0.3.2 is coming with fixes and user requests (like display freq for dmaxl, dev temp where available and so on)