For the 10ml you can't beat a nice squishy plastic with a thin nib, but I think there is the option to go glass with larger bottles where pocket friendly is less of an issue. I use a dripper so a glass 10ml would be a no no
I tried glass but couldn't get on with it, takes forever to fill a tank up with them dropper things lol
I have currently a load of rigid clear plastic with thin nib in 10ml, and 30ml bottles i have squishy opaque with needle tip.
I like the idea of squishy plastic with thin nib, just need to find some.