Agree with this. I had one and the only, but crucial area that pushed me to sell it, was the camera.I know two people who got it this year, and they absolutely love it. Especially for the price.
For me, camera is too important and I know will generally plump for whoever has the best camera alongside generally being a good phone. So Samsung it is.
But the OP3 is a great phone, they've come a long way in 2 years and are a genuine alternative. Good news for the marketplace.
It's decent enough but that's below what I need. When I used it for my son's sports day at school, alongside an S6, the OP3 struggled for detail and looked washed out with too many blown highlights. When you've got time to set up the shot it's better but fast-moving kids and a one-time opportunity were too much for it.
Again, aside from that, I really liked it and would (and have) recommended it with the camera in mind.