I started with apollo-client on a new app, but switched to using ngrx and turning off apollo-client caching (basically using apollo-client as a fancy graphql request library - I should probably just use apollo-link directly). My main problem was that it felt like it required both developers and components to have too much knowledge of the individual queries that the app was making. Instead of writing an app that happened to use graphql, I felt like I was writing a graphql app.

An example of that is updating the state after mutations that modify lists (e.g. creates or deletes). It's up to the developer to remember all other queries that could be affected by a mutation and to update them manually after the mutation completes (more info: https://github.com/apollographql/apollo-client/issues/3505 and https://www.apollographql.com/docs/angular/features/cache-up...). If you add a new component that performs a query that could be affected by a previous mutation, you have to remember to also go back to that mutation and update your query from it. With ngrx (or redux), the consistency is baked in, and part of the beauty of it is that if you update the state, anyone who happens to be reading that state will get updated automatically.