Cotton IMO is superior to silica.
Flavour is increased, and it seems that it atomizes better, getting more nic absorption.
That being said, it's more labour intensive to begin with. Learning how much cotton to use is trial and error, and may frustrate you. I just had a cotton wick last 5 days on some pretty dark liquid, which is really good.. before I was re-wicking after every tank. So I may have found the sweet spot.
Flavour is increased, and it seems that it atomizes better, getting more nic absorption.
That being said, it's more labour intensive to begin with. Learning how much cotton to use is trial and error, and may frustrate you. I just had a cotton wick last 5 days on some pretty dark liquid, which is really good.. before I was re-wicking after every tank. So I may have found the sweet spot.