My kids (2 teenagers who are glued on 24/7 including TV and movies) and I (phone and very light internet) have had Galaxy Androids for a few years and been very happy.
About 4 years ago I got an S2 and they got S3s which were very good for the time except that the battery life sucked. A couple of OS updates helped considerably.
Then about 2 years ago, under a new contract, they got S5s and I got an Avant (the economy S5 near-equivalent which is fine for me with minimal downgrading at half the price). In their high school crowd recent Androids are viewed as substantially better than equivalent iPhones, but teenagers are whimsical and swayed by group opinion.
My wife, who has grovelled at the altar of the Apple for a couple of decades now, is a religious fanatic.