They all serve the same purpose. And some designs are better than others. A few clever folks (Ash, Tom, etc) built very similar FMICs. So what. Why can't you just say "hey good numbers man." Quit hating. Ash is a stand up guy and Russ and the Z1 guys are VERY fair. So, hey good numbers man. I think I may be looking to get some intercoolers in the next few months. I wish I had the dough (or need for that matter) for such a sweet setup.