If your plan is to boost an old computer still using SATA, my recommandation is the Samsung 870 EVO, very good for the value. If your application is more storage intensive (like a database server), have look at Samsung 870 PRO
Based on my experiences, so far, I have very good experiences with crucial ssds
I have tried other ssd brands for friends who need a cheap alternative too, so far they're all goood.