I always used to use eSun PLA+ which prints really well and offfers pop up on Amazon regularly.
Since the bulk discounts have appeared on Bambu’s shop, I’ve been mostly printing in Bambu PLA Mat and it comes out an excellently.
My favourite stuff for print quality is Bambu PLA CF in black. The finish prints are insane. Can barely see any of the layer lines at 0.2. Going lower on the layer height for detail and they are invisible.