I haven't looked at KATX much- I didn't like the games being played with spinoffs, etc. Doesn't mean it's no good, just that I wasn't comfortable. It's also had a big run, and being still in the exploration stage, not many near term catalysts for sp increases.
The potential copper play I'm in is Wolverine Exploration- WOLV.OB (Be careful, there are other Wolverines out there). Still an explorer, but with a huge unexplored claim area in Canada. Expecting results from an IP survey soon, drilling results after that. DYODD, of course! A good board over at ihub.
Quadra FNX is also a copper play, with some gold also. QUX.TO, QADMF. A fairly high cost producer, so should be highly leveraged to the price of copper.
But don't you have all your money in SFMI and GHDC?