Printed it at 50% scale in Hatchbox PLA black. Was my first vase-mode print on the CR6 and it worked quite well! I was testing some filament-swapping mid-print and made the super tiny one at 10% scale, but the base got a bit messed up unfortunately. The large one is 200% scale printed in 3D Solutech's astonishingly good 'Natural Clear' PLA.
(I selected the Ender 3 Pro printer model because Thingiverse still hasn't updated the list to add the CR6 SE even though it launched 6 months ago)