Looking over your leads. At about 10% research stage at the moment, my gut says MGV. So i'll be focusing on this the most, followed by NIU.
As I mentioned real busy, plus no super rush as I have to wait for some stock to mature to sell stage before I can get into others. It's great to have a few ready to go, you have to be constantly looking for value companies.
Here's some other I'm following for one day down the track. There all unloved and look cheap, but now is not the right time to buy, just follow. They'll be winners when certain milestone are met. If price drops by 50% from here, their bargins. - STX, RMX
I'm busy chasing cheap silver mining companies. The silver price is going to go nuts real soon based on all my research. MRV already mentioned is a silver play. Do you know any wholely silver mining companies.
This is a handy research tool, catagories companies by what there mining or exploring. You may have seen it - http://www.miningfeeds.com
