Originally Posted by SDGenius

Strafe - full carbon fiber, more subtle lip(flows perfectly w/the sedan body lines, IMO), slightly better fitment

HD - full fiberglass or w/cf wrapped lip(extra $$$), more aggressive lip(duck tail style, compliments a body kit nicely), special "tricks" needed for proper fitment

both look great in person and in pictures, it's just a matter of style/taste and budget.