I found the KFL+ to be a CROCK! A leaker and a flooder. And that's a real one, not a clone, leaving NO excuses for BAD machining or copying or any of that. The flavor is just OK, not even in the category of really GOOD, or above. The Atomic, TOO ME, was the same. Toome, it's nothing more than a smaller IGO-W-W1-W2-W3-W4-W5. My W-5 lasted 2 days, and one of the end screws stripped out. I pulled the post out, and made it into a single coil. A REALLY big IGO-L. And, in that respect it perfroms well, but, too many airholes, and too big now. TOO late :-( THAT is what I like about 1 19$ dripper. Disposable. TOO me, that little IGO-L, and the Kraken (YEP), and the ORIGEN (GREAT), have the best taste on my atty. rack. about 30 of them. All real, no clones, escept for ONE patriot, that a post pulled out of. (My fault, I should have known NOT to buy CHINESE CRAP. Hungary, made by Norbert, THAT is where the Flavor is made! Origen V1 and V2. They're 120$ not cheap, but, you sometimes, get what you pay for. Innovation, great machining, and a great outcome in Flavor, LOOOONG vape times before dripping again. A Roomful of Vapor if that is your thing.
The Zenith, I personally do not like very much. It is just another of the good ole fashioned drippers. Same thing, NO innovation, Nothing that makes it stand out from the crowd. OK flavor, OK everything, just not real good at ANYTHING. The immortalizer, I can't tell, as I don't own one, and from what I see, I probably won't. And, when I say "Stands out from the crowd" I DO NOT mean in looks. I care NOT about looks. Nothing but Poof. I care about what the INSIDE looks like. Center pin arrangement, insulator material, Atomizer material. Post attachment method, type of posts, size of posts, And, SIZE OF DRIP WELL. I LOVE THEM DEEP. And, air holes that pull air in from JUST under the coil, which invariably means a high post, so high coils.