Did a quick review of my three sipping rums: Zaya, RZ23 and Pampero
And...
I liked the Ron Zacapa the best, sweet, but not artificially so, and very smooth.
2nd was the Pampero, less sweet than the RZ, and with an oaky hint, also quite smooth
3rd was the Zaya. I was most excited about this one, I love vanilla, and everyone says this has it in spades. Well it does, but it was the least smooth, and had the most alcohol bite. It was still good, but I think it will reside in the freezer.