Suggestions on investment (elss mf)

A little off topic but I need suggestions from you people. I want to invest around 50k amount in ELSS Tax Saver MF to save tax under 80cc.

I've decided to allocate in below MF for 10 years: Quant elss(20k), Parag parikh(15k) & Mirae asset(15k)

Is it good? Or it is better to invest these in ppf? Any suggestions will be helpful.