Sandy for me, peat is even heavier than the fine coir because it composts quicker and holds water even longer. Peat also harbors fungus gnat eggs and I HATE fungus gnats.
I use sphag/tree fern for phals until they need to be potted into a 4" pot and then I switch to a CHC mix which consists of coir chunks, diatomite, charcoal or I mount them.