The Jinhao converters hold the most ink but have no agitator (in pic related I added a small ball bearing to act as one)
The baoer converter has an agitator (spring in one, small bead in another) but doesn't hold much ink and in some jinhao pens it doesn't fit as well in my experience. Funny enough one has no branding whatsoever, the baoer converter that has branding has the best twist action of the lot, the jinhao the worst.
I've also bought baoer pens with unbranded jinhao style converters so it seems it is luck of the draw with what type you get.
Edited by linkoiram, 09 March 2020 - 21:11.