I don't think you can go wrong with either of these options. H-pipe's will sound a little bit deeper but don't make a ton of power. The X-Pipe will be louder, raspier and make a bit more power.
They both make a quality piece. Personally I've went with BBK X-Pipe in the past and had great success with it. I love the loud and raspy sound of the X-pipe! I'm confident you'll be happy either way.
Feel free to hit up my CS team with any questions you may have!