My favorite at the moment is Zaya. I just wish I could compare the Guatemalan with the Trinidadian stuff. I've had both, and liked both, but really don't knwo what the difference was, as it was months between the time that I had them. Even my wife (not a rum drinker) will drink Zaya neat.
I've also had and liked Ron Matusalem Clasico.
HC 7 is another good one. Though I have had it side by side with Guatemalan Zaya, and preferred the Zaya. Just suited my palate better.
I know that I'll need to try some of the others that have been listed here, too