Quote Originally Posted by curious aardvark View Post
it's a direct drive printer - so, in theory, should not have a problem with any of them.
I do recommend starting with flexible pla - it tends to be that little bit stiffer than tpu, and easier to use.

You shouldn't need to heat the bed for flexibles either and there's zero warp.
most flexible pla prints best between 220-230.
Print slow. 15-30 mm/s and expect a fair bit of stringing.
retractions should be short and slow.

My current favourite flexible pla is sienoc.
It's almost exactly like polymakers polyflex - but cheaper :-)
Many thanks, I will take this into consideration.