The Google Play Store is the default app store for every Android device using Google services.
Ranked in these QuestionsQuestion Ranking
Pro Most variety
Google Play Store is an incredibly large app store and the largest on Android.
Pro Default store for the majority of Android devices around the world
The Google Play Store is of course the default store on all Android devices that have Google Play Services.
Con Zero quality control
There is absolutely no quality control on the Play Store whatsoever. AAA publishers constantly get away with purchasing five star reviews from click farm businesses while at the same time game spammers get away with flagging legit games that they have stolen code from and published as a clone.
Con Search isn't good
For what is the worlds leading search engine provider, Google offers a extremely poor user experience with the search functions on the Play Store. It is often easier to find a title by searching on Google rather than using the in built search on the Play Store.