I'm looking for an idiom or proverb that emphasise the availability of choices and the ability to identify the best/correct one. The ability is the result of experience, skills and knowledge.
With a plethora of tools in the market, a seasoned craftsman is able to quickly assemble a right set of tools to solve a particular problem. A less experienced craftsman may fail to identify the right tools to solve the problem with the same level of efficiency.
With that many selection of hair products in the market, an experienced hairstylist can quickly distinguish the better quality products from the mediocre ones.
An experienced person will be able to identify which are the time-wasting activities while an inexperienced person may have to go through each one of them to find out.