So far I limit myself to the built in graphene stores, obtainium, and google play. That has everything I need.
More stores is more bloat, more for me to manage, more background services, and more attack surface. No one has convinced me that zapstore adds value enough to me to overcome those downsides.
Fair, just cleaner UX, UI. Pulls from Github, and has author signatures. (Also recently added a zap feature to pay for apps you appreciate) I used to use Obtainium. It had a bit of a UI problem but overall worked. Never use Google Play. To each their own.
I wouldn't use google play either except I need a couple of things for my 9-5.
