well compared to PEEK they're practically giving armadillo away with a box of crackerjacks :-)

Never used any pla+ Always found standard pla to be sufficient for what i needed.
Esun filament is usually pretty good.

I am curious to see how this nylon 645 behaves. With the exception of MYMAT nylon (which is also bloody expensive) I've never had and success with any kind of nylon.