I just received my Ammit 25 and so far, I like it more than my Pharaoh RTA. I haven't used my Kylin very much but I probably should haha. Never got a chance to try the Serpent SMM yet but I feel like I may enjoy it even more than the Ammit since I'm not a big fan of the Ammit's height in 5 ml mode/the 510 drip tip/narrow bore although I DO like the restricted airflow.