I agree. I have "go to" lures for every species. But, there is one lure I have that goes with me wherever I go. It is the Rapala goast (sp) pattern glass shadrap, size 4 (gsr4). That sucker is hot in rivers, lakes and ponds in every state I have fished in. But as the "Michigander" above stated, there are times when the conditions are not right for it!
