I use ESUN PLA+ for printing minis and would recommend it to anyone.

For reference, the only filament I’ve used that came out nicer was SUNLU high-speed PLA, but would NOT recommend for minis (it can’t cope with the constant retractions).

Oh, and also prime your models before painting them. I just use ordinary spray primer that you can get for dirt cheap - Tetrosyl Trade Spray / Hycote / Motip are all good brands. Just make sure you don’t get gloss finish and you’ll be fine!