Oh dear lord. Palettes. Just do some searches here for "palettes" - top left search function. There's more information here than you'll ever need.
As for a fave palette. Most have a certain theory style they apply to everything they do, but picking the right palette for the job is what's important. There's no reason to limit yourself to any one palette for multiple projects. You use your knowledge of color and how it affects your viewers' perception to color anything you do so it makes the right impact.