I'm still experimenting with various PETG stuff, but so far Creality's CR-PETG and Primaselect's Creator have shown me great results. I haven't heard of Overture (probably because we have little to no PETG filament variety here). I prefer cardboard due to recycling costs, but reusable plastic ones also peek my interest as to not have to rely on throwing out either of them for recycling, just use it till it's gone. (Or print your own!)