I have one of those flasks from Geekvape on order.should be here in a couple of days.
I also ordered a Stentorian refill bottle from FastTech. I like that there's an SS top portion that partially covers the bottle. I've been finding that tightening caps gets a little annoying since you have to be careful not to accidentally squeeze the silicone bottle.
On the subject of changing flavors. I don't switch all that often but I go through 30-60ml of a particular liquid before swapping so I don't necessarily need to fill more than one bottle with flavor at a time.
I did order an extra refill bottle, though, so that I can rinse the 510 connection out to get rid of any residual liquid when changing flavors.
Sent from my SM-G950U using Tapatalk