Nice to come back to this thread after a while and still find cotton being hailed top dog, I have an Ithaka clone on the way and am going to give "good quality silica" if there is such a thing another bash, but even before I get to it I'm pretty sure I'm going to hate that scratchy throat feeling a silica setup always seem to deliver, regardless of the potential or not health issues, so I'm researching my alternatives in advance. I have used organic unbleached etc cotton pads in kanger T2s and my Smok octopus, but never had much luck with my cotton pad gennies setups, they always seemed to bloat up after a day or so and then flood and burn, which I know seems like an unlikely combination, but there it is. The cotton bird house seem like fun to try, bu I'm pretty much mech mod only now and see more bunt cotton pads in my future from a fresh battery.
I read about "rolled cotton" and wonder if it is better than the pads, and how folks are preparing their wick with this stuff, and if cotton balls are the same thing as the rolled stuff, any advice would be gratefully received

As for bamboo yarn, I always end up burning that too in my Gennie experiments, maybe this is suited to the Ithaka ?
While micro coils are being discussed away from the "army" I built a 6wrap 28g micro/mini on a 2.3mm #200 u-wick in my RSST today and although I usually run a 0.7ohm 4wrap 28g on a 2.8mm #200 this one comes in at 1 Ohm and is instant on and interesting. Interesting because TH is different, more, but harsher rather than fuller I think, still running it in, but as I mainly run 18350s the higher OHms is a definate plus. Vapor Is a very slightly less than the 0.7ohm, and flavor is similar/still deciding if better. Gunking was always an issue on my fatter wick close coil setups when I first got into gennies, but that was with #400 and #509 before I started using #200 u wicks with my high VG ADV, so time will tell on that one.