Well, that's the capacity... in truth, let's say you're running a .4 coil - with a freshly charged battery you'll be pushing 10.5 amps. That's about perfect in terms of vapor production... and it's truly a whole different world than the .7 to 1.5 realm. I mean - they are nothing alike. Once you experience vaping at that resistance, you really won't ever want to go back... which is problematic in a few ways. For one, all your carto tanks and protanks, etc are rendered useless. You never vape them again... sad. For another, you have to get rid of all your juice and start investing in or making juice that is much closer to zero mg. So it definitely changes your whole vaping identity. But it's beyond luscious.
I have to disagree. I've tried running extra-low resistance three times with various coil size and configuration using 26 gauge Kanthal -- I use Sony 18650VTC3 batteries which are rated for 30 amps continuous output so it's relatively safe. The coils measured out to 0.4 ohms, 0.5 ohms, and 0.4 ohms again.
It didn't work well at all for me. Sucked up juice way too fast, muted the flavor, and while it did produce a bit more vapor than my 1.0 ohm microcoils (28 gauge, 3/64" diameter), it wasn't enough to overcome the juice usage and reduced flavor for me. I'll probably try again in the future, but it seems like I prefer higher resistance vaping.
1.0 ohms my mechanical mod, 2.0 ohms on my regulated VV/VW mods is perfect for me. 28 gauge on the mechanical, 30 gauge on the VV/VW's, both 3/64" microcoils.
To the OP -- basically, asking what other people's favorite wire gauge for their builds is useless except as a basic guide and starting point. You need to try various thickness wire for yourself to find what's best. After trying 26, 28, 30, and 32 gauge I settled on 28 and 30 gauge as described above. You may prefer 32 gauge, 26 gauge, or something else entirely, but you won't know until you try. Luckily, experimenting with coil builds is the only thing in the vaping world that is cheap.