I bought two different sorts: one ended up being more like nappies (diapers, very soft, nice cottony). I like those for the first round to get lots of the initial water.
For scrunching the subsequent times, I really like these:
I got them in "Dune/Citrine/Tarragon" color combo (my house is in yellows/greens/beighes/golds). I got two sets, and I take 3 to 4 to the salon with me when I go.