why buy nrl?

Looking for feedback here fellow investors: I'm likely to buy into NRL any day now but seeking other opinions as to what this stock's competitive advantage is?

I see CLR has been fantastic since floating... EOC has been disappointing... plenty of other coal plays everywhere in between. Most of these speccy coal plays seem essentially go up & down with the general market, perhaps regardless of their individual sitautions to a point. Thoughts people?