cotton vs bamboo/hemp prefolds?

Hi girls (and perhaps some guys)

I'm looking at getting some prefolds for when my bubs arrives and I was wondering if anyone had any thoughts on the pros/cons of cotton vs bamboo/hemp? My thoughts so far are:
- cotton is cheaper and absorbancy is ok for newborns as they get changed so often anyway
- bamboo/hemp is more exxy BUT if reusing as inserts/boosters for other nappies when bubs is bigger added absorbancy would be more useful?

I am thinking of getting some cotton flats too which can later be used for spew rags etc but wasn't sure for the prefold side of things? Any experience appreciated!

I have only used cotton prefolds - and I loved them. I tiedyed mine to make them more funky. They had been good to use for spills as well - comparing with bamboo pocket stuffers I had in bamboo - cotton keeps its shape where the bamboo went out of shape.