I went with minimal material over print time. So the hex design takes longer to print, but uses less material and allows for better airflow.
The transparent PETG in the pictures shows what happens at 70C for 6 hours. It warps pretty bad, but is still usable. I have many PETG holders that I just put in to recharge and they seem to be fine, but the basket didn't fair as well.
The blue basket is ASA and does great at 70C for 6 hours and really recharges the beads well.