Got into rum via Brother Cleve back in Boston in the early 2000s. This forum is an amazing, amazing resource (thanks Ed!) and I am thankful for it.
My story: I bartended in Boston, helped Cleve kickstart a tiki renaissance up there. I was on the tiki circuit way back when. Now I'm in Hawaii.
I no longer actively tend bar, except for helping out at an occasional USBG special event. My favorite rums are Rhum Bologne (Guadeloupe), Rhum Neisson (any of them), Batavia Arrack, El Dorado 21 or 25, Old Monk (thanks Cleve), Germana, and the Santo Antao grogues. Of course there are plenty more, but these do just fine for most cases. Shout-out for KoHana.