When I last wrote about Google Photos, Maury McCoy let me know that he loves Google Photo and I like the way he uses it!
"I love Google Photos. That said, I keep a full resolution copy of all my phone photos on a HD on my PC and backed up to the cloud as well.
That said, if I'm trying to find a photo, Google can't be beat. I can type show me a picture of Elizabeth in front of a bridge and it will find it. I can ask it to show me pictures of caves, etc. It's getting better all the time and automatically tags pics as I upload them.
If I need a full res version of a photo, I use Google Photos to find the image, then search for that same filename on my PC to find the original. (Google sometimes compresses things.)"