With commodities stocks one needs to be lucky twice; one, when buying them and second, when selling them. Of late, those holding commodity stocks are a grumpy lot as the Thomson Reuters CRB Index is trading at a 13-year low due to the underlying weakness in global energy and metal prices. Given this pessimism around low demand and oversupply, nobody is willing to stick their neck out and bottom-fish. But like most cycles, this too will turn. The billion-dollar question is when and hence it makes sense to watch out for players who are cost efficient, have negligible debt and the staying power to live through this downturn. The following are our best picks.