As for Karbonius being a cheap knock off, personally I prefer it to the Evolve offering on the design front. It is laser scanned from the OEM box. I am in the position of owning the OEM box and have no issue switching the the Karbonius. I want to retain the flap because I want the original functionality. The Evolve set up and the full Karbonius set up are about the same price, that said, I'm not sure that the evolve set up at £3k is not alpha N. If it is, there's no way I would pay the same amount compared with a MAP equipped karbonius set up.