The biggest issue you'll run in to is build space. Couple posts back I put a pic of the build I have in, dual 2.5mm 26 gauge nichrome80 9 wraps at 0.4 ohms. I think that's about as big as you can go, there's very little clearance between the coils and the barrel section. As far as I can tell, this is about as much wire as can be fit in. Just rewicked, and found that one of my coils was making contact with the barrel, just enough that it wasn't firing evenly. I had dropped it, so that's probably when it made contact.
Flavor is on point with an RDA, no doubt. Chamber size is tiny, and with the included drip tip, vapor doesn't travel very far. It feels like I'm vaping on a dripper, since it's so small.
Not quite as airy as RDAs when wide open, but airflow is sufficient. More open than my Lemo 2.
With the wide juice channels, high VG juice (~80 VG) wicks with no problem. No dry hits. Overall, it's not hard to wick. I trim my cotton (native wicks cotton) about even with the edge of the deck and just cover the juice channels.
This tank is tiny. It's just slightly taller than some RDAs. Filling is a bit of a pain. Bottom filling is always a pain, since you have to remove the atty, and that little screw tends to go jumping (don't forget to carry a mini screwdriver). I've been refilling a few times per day.
Overall, there are a lot of limitations, but for me, the vape is worth it. With a good build, flavor is excellent, and vapor production is high. You could get more vapor from a bigger build on an RDA, but there isn't enough room for it here.
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