My opinion is Sound is more important then looks. so id go with the sound first. but really go with what ever is in your budget i guess. the chin spoiler is 100 while x pipes are 160 plus mills so you figure 200. But if i had the money for the X pipe do the x pipe.like the looks of the chin sporlier but would also like the sound with the x pipe{also gettin mufflers} whats ur alls opinion on this.an how good do the bbk x pipes sounds