What kind of glue?

I am going to be putting down a layer of plywood on top of the OSB sub-floor in a room. I was planning on gluing & screwing using PL200 adhesive. Given the amount of adhesive I'll need this would save a fair bit of money however I found a bewildering array of adhesives including some that are labeled specifically for subfloors. Is there something I'm missing or would the cheap adhesive be fine for this? Thanks!