I've had my authentic N22 for about a month now, and got to play with the FT clone for a few days right before mine came in the vape mail. If the FT N22 clone is among your favorite attys then this is one authentic you might consider picking up as this is ine atty where machining counts. The major difference is in the airholes. Not only are they moved in closer to the posts which makes positioning coils easier (my first build on the clone shorted out on the top cap) but they are bigger. Airflow on the authentic is easily twice that of the clone, even the cyclops openings at the base are visibly wider. Other upgrades you'll get with the authentic is a overall higher quality of craftsmanship and materials, a deeper juice well, and a shorter profile. Though I was a little bummed to find that while the authentic's chamber is highly reduced, the top cap is not domed, I'm assuming this is to accommodate large builds.
My main issue with the FT N22 was that the draw was comparable to the magma, but I get a better vape from my Magma without the pain of having to do a center build. I've only been trying center post builds for a few months now and the N22 has been one of the more labor intensive attys to build. That said the N22 is the mega-Magma I was looking for, I am loving this thing. Flavor is clean and smooth whether its 1/2 closed at 40w or wide open at 90w. I like that the separate air holes redistribute the airflow evenly across the coils regardless of how open it's set, and I think it makes a difference when closing it down for flavor. Apart from overfilling, any juice that does manage to weep down into the openings gets sucked back into the chamber on your draw so it doesn't get on the outside of the atty. When I want big flavor this is the atty I've been reaching for.