In Piedmont, the white truffle (in Italian tartufo bianco, from the Latin word Tuber magnatum) has its own season which runs from the middle of September to the end of January.
Of course you need to have the permit to collect the white truffles, since white truffles are a delicacy that must be collected only at the right time. This is because it’s better to eat them fresh by shaving them right over pasta, especially the egg one. Many people prefer using the black truffle, such as the truffle butter, the truffle cheese, since it is seen as a gourmet.
It depends on your taste, and if you can’t decide which one works better for you or if you have never tried them, the only suggestion I can give you is to try both of them and then choose which one you prefer.