Which is the best Pieces color Black or White

The reason that you like Black (so that you can "Know what you're up against") is because you haven't yet developed the ability to create your own strategy and take the lead.  If chess is a dance, then White is given the lead from the beginning.  If he plays correctly, and so does Black, then a draw will ensue; if Black misteps in the dance that White choreographs, then White wins.  White gets to choose the theme of the dance (game) because he has the lead.  As Black, you can only respond to White unless White forfeits that lead to you.  Ergo, White is inherently better.

You should try not to see one color as advantaged over the other.Some people like white, others like black, and still others have no preference. I do find that new players tend to slightly prefer white over black because they like the first move 'advantage' but really if you become good at playing black the first move thing loses it's importance somewhat. You should get as much practice as you can playing both sides because when you are in a tournament situation you won't always have choice of color and you don't want to be in a situation where you lose every game where you play the color you are not comfortable with. A 50/50 or worse (you can't expect to win every game even when you have choice of color) win-loss ratio usually doesn't win many trophies or build up your rating very quickly.