I now have the following...
Limitless - 24 mm. At this point, it's been superceded... avoid
Limitless Plus - 25 mm. See Limitless above
Combo - offers replaceable coil heads, multiple decks, 6.9 ml (+/- depending on wicking) capacity. It's worth owning... Note that this is nearly identical to the Limitless Classic... the primary differences are in the airflow and chuff. I do not (yet) own a Classic.
Azeroth - 24 mm. No real benefit over the Limitless V1 except the not-quite-Goon (no bevel on clamp plates to aid in installation) deck which allows for really exotic builds.
ApePal - 25 mm. I have what is apparently an early version, but I would still avoid this one... It's single coil, and way too airy... The warmth and flavor has a hard time getting through..m
QuadFlex - 22 mm. I actually really like this one. Great flavor! Downside is smaller deck, lower capacity. Filling is also a bit off as the deck needs to be removed and threaded back on.
Avocado - 22 mm. Decent flavor, but best when built in single coil mode... Otherwise, filling is a PITA!
Avocado 24 - Still not the greatest filling method, but better than the 22. Decent flavor, decent capacity.
Karma - 25 mm. Low capacity for its size, but otherwise a nice vape. VERY solidly built, and as easy to build and fill as the Limitless line.
Limitless Gold - 25 mm. This is, again, the Combo, but there are several 1 mm holes around the outside of the base that feed air up the center shaft to slots under the coils. The slots do not have raised lips and I have experienced a little leaking. The construction is a bit better than the iJoy versions. This will accept Combo/Classic decks and coil heads, but, honestly, the premium paid vs the accessories NOT included make this one I'd avoid.
Vgod Trick Tank Pro - 25 mm. Best flavor because of the bottom air, but it's not as easy to wick as the Limitless line. The fill port is tiny and requires pointy tipped bottles, or a lot of patience and a handful of paper towels.
Kanger Dota - 25 mm. Hey! For $15, it's pretty good... the posts are a bit close together, so big builds are out, but the air is good, and the fill method functional (unscrew the deck so that it rises a 1/4 inch and pour in, screw the deck back down).
Theorem - 22 mm. Hahahahahahahahahahahaha... yeah... no! Great flavor, primarily single coil, low capacity, decent fill, HORRIBLE build and air. A LOT of broken glass, here...
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