I keep a close eye on 3 of the 4 you mentioned however I do...

I keep a close eye on 3 of the 4 you mentioned however I do favour the virgin discovery over old reworking of pits that have most the easy pickings removed such as BDC (spread over huge area multiple pits). BRB have the potential to mine both open pit and underground simultaneously blending Oxide and fresh. The underground growth is massive and the open pits are seemingly joining together. Hedging risk on/risk off through different metals can harness leverage to gold and Lithium price swings. Each to there own criteria.