Believe it or not, I have not reviewed them or their present land positions. It appears that DeBeers and Ashton has positioned themseleves with good land/companies over time and become a spoiler. The junior pie has become less palatable in the original discovery areas.
Bottom line is I cannot be a guide to the new fields. It is getting more interesting in new discovery areas as more companies are striking out accross the territories with better hope.
In truth my feelings are so mixed about the diamond explorers that I do not want to look at them too closely.