I currently have the S8+ and the OP5 and actually ordered the LG G6 Unlocked US version yesterday during Prime Day. The S8+ was very close to being the perfect phone for me but a couple of things are holding it back, well actually only one thing, speed and lag. I am even eyeing the HTC U11 and Essential phone. I can't find the perfect Android phone for me right now (might have to wait for the Pixel 2)
S8+ Pro's:
Screen
Design
SD Card Support
Nice Software Features (Youtube app gets nice and bright, dual bluetooth connections, good bluetooth sound management, app locker, GIF creator)
Camera
S8+ Con's:
Speed
Needs more RAM/Bad RAM Management
Fingerprint Sensor
QC 2.0 isn't that great (especially while using the phone)
Phone overheats during charging and navigation in Texas (just gives a warning that the phone is hot and wont charge until it cools down)
Heavier than the OP5
Screen protectors suck, even the whitestone protector didn't work well for me, glue starts to come off the sides in Texas heat. I have spent over $100 trying to find the best screen protector
Speed
Speed
The S8+ just feels like a dog for me sometimes. App switching can be slow, pulling up the app drawer is slow, apps close out of memory way too much. If I could just tell Android not to close a certain app on me it wouldn't be an issue. Basically, I use Excel every day at the gym and Excel reloads all the time, combine this with the fact that Excel has some type of bug where it freezes on first launch its even worse. It usually goes like this, open excel and it gets frozen on the splash screen, close it, retry opening it (this happens like 4 times), excel finally opens properly and I open the file I need. I come back to Excel 10 minutes later and I have to start the process all over because the app was closed.
OP5 Pro's
Great Software
Amazing Fingerprint Reader
Quick software updates
Speed
Amazing RAM management
Portrait Mode
DASH Charging (don't even put my phone on the charger at night anymore, just in the morning while I am getting ready)
Better battery life than S8+ (maybe due to Dash Charging)
Con's
No 2k Display
Bigger Bezels
Camera is a mixed bag (The best photo I have taken in the past year was on my OP5 but it’s not as consistent)
No advertised water resistance
I ordered the G6 because I read the camera is amazing, it is fast, and I want to see how it handles my Gym usage scenario compared to my S8+. If it has the same issue I will be returning the G6 and selling the S8+. I might try the U11 but will most likely just use the OP5 until the Essential Phone or Pixel 2 and go through the same usage scenario at the gym.