I think I need to repot

[Smith96]

I have a compact/mini NoID Phal. that I bought a week ago from Home Depot, and I looked at its roots today and I think it needs to be repotted. But I dont know what potting mixture I should use because I researched and I've seen that some people use sphagnum moss and some people use bark type material. could you please tell me which is better, or if you have something that works for you. And could you tell me if i should put it in a clear plastic pot then put it in a nicer pot, or just put it in a terracotta pot