Not in possession of a lot of high end attys so I might get easily impressed, but love the Manta. Airflow is spot on for my style of vaping and a 0.55 build. Usually running with 2 holes open, fully open after a few beers. Flavor is top notch. I'm not sure how to accurately describe the vape. Very smooth perhaps?
A big thing for me is practicality. Used it exclusively last week on my vacation which included three days of rough treatment during a metal festival. For the whole trip the total amount of leakage was ONE drop, probably because of some sloppy squonking. The AFC is mostly set and forget under these conditions. Would love to see a Vector like AFC on the next version.
The tight fit of the cap to base is a problem for me too. I am a little skeptical about the somewhat irreversible act of removing one of the O rings though. I will wait and see if it loosens up after awhile.