The standard ink that comes with a Jr George is Taiwan generic. Many pen makers throw it away and use something better with the pens they make and sell. Personally I sometimes use the generic ink, it writes well, tends to wick out a little if you are not writing on high quality paper, dry time is about average, but it clogs easily if not used quickly. For the fountain pens I sell I never provide the generic ink. Many long time fountain pen users have their own favorite ink, for those who want to buy ink from me I sell Private Reserve. I might be able to find a few generic cartridges that I didn't throw away or used if you are really set on using generic.
If quick dry is your primary concern I recommend Noodlers quick dry inks. If it hard to beat for dry time. But remember, true quick dry often means quick skip, and quick clog.