I'm down to my last two Rogue chocolate bars and beginning to panic

Colin is an unusual talent, that’s for sure.

One place to look is the Chocolopolis Sweet 16:

You might try, for example, the Goodnow Ucayali and the Letterpress (not on the list) Ucayali – different maker, same source of beans. But Soma, Fruition, Mission, Fresco, Bonnat, all are good makers.