It sounds like a lot of CHers only use the best when they cook--Valrhona, Plugra, Callebaut, artisanal cheeses, small farm produced eggs/meats, etc. but for a lot of us, it's cost prohibitive to buy the best of everything all the time. What items do you think are worth splurging on and using the best of all the time? Do you have a great balsamic vinegar where everything pales in comparison, love the plugra and can't buy anything else, love local dairy eggs, can't live without Noka chocolate;-), favorite truffle/oil...? Is there anything you'd advise others to spend their money on because it makes a big difference?