Burton Custom X or Lib Tech T Rice BTX?

I am so confused on which snowboard to buy. I want something very fast with great control while going fast. It needs to conquer the entire mountain. A must have is full control while going at super high speeds. I want something has a bit more flex than normal, but still be able to hold up going very fast. It just needs to vaporize the ice and snow. I'd like it to be on the lighter side, and be ABLE to do grinds easily. I hear the tech of the T Rice is a lot better, but the Lib Tech T Rice, I believe, comes in two shapes. A pointy shape or a blunt shape. I'm just very confused on my decision. Please Help.