I bought another bottle of Kobe #51 I figured, why not. By the time I use up the two bottles...well, it'll be a long time until then. I've decided to dedicate a VP to #7 and #51 exclusively (with periodic breaks of Pilot BB and Diamine Midnight, I imagine), and keep it on the Techo. Given the 0.5mL per fill for the CON-50, I reckon it'll take ~200 fills for the two. Techo writing will typically finish that up in a week. So we're talking 200 weeks here Oh, brother...I have 6 more bottles on the shortlist, and that'll probably be it for a good while.