[Samsung Galaxy S8+ Questions & Answers] Symphony0fLife:
I did indeed! S8+ hasn't been touched much since the other two came in. It just can't compare (for my personal usage) to the OP5 or the P10. Between the OP5 and the P10 though I ended up sticking with the OP5 and shipping back the P10. I kept the S8+ as a backup and it hasn't come out of the desk drawer much since. Had planned on selling it but couldn't offload it around here for the life of me.

OP5 destroyed both in battery life. SOT with it is easily 9.5-10 hours daily for me. S8+ was second best with 7 hours SOT (though it required much tweaking and management to get there versus the OP5 being fully as is out of box with nothing turned off) and P10 was worst at 5.5-6 hours SOT. All useable, but why not go for the best.

P10 was far and away the best in terms of camera, followed by the S8+ and the OP5 being last. Though this was less of a consideration as it was almost impossible to tell ANY difference between the 3 in broad daylight 1x zoom shots, which is the only time I use my phone for photos anyway. If it's low light or anything important no phone can hold a candle to a proper DSLR.

Operating system was a hands down win for OP5. OP5 is basically stock android with a few actual improvements and absolutely zero bloat. P10 had a little too much bloat for me and their skin is just annoying to look at. S8+ is ****ing horrific when it comes to bloat/duplicate apps and while their skin is more appealing this time around, the lag is maddening. It's quick out of the box and for the first week or two but after that, well, there's a reason so many of the S8 revisited reviews make a point to address Touchwiz lag, giving it a no go and recommending basically any other launcher. And I don't care for third party launchers.

Display - S8+ wins here naturally. It's just the most gorgeous display on the market, that is indisputable. OP5 is second, it's AMOLED display is gorgeous as well. It's disappointing that it's 1080p but then again, the S8 is set to that out of box and recommended to be left at that by Samsung, and the OP5 has incredible battery life which is no doubt in part due to it being a smaller overall display and lower resolution. P10 was most disappointing here to me, but it was by no means awful. Win for the S8, but the difference is negligible enough it didn't weigh much in my choice.

I prefer the front fingerprint reader to Samsung's Iris scanner or rear fingerprint reader. It's just much faster than either. Dash charge is insane. You can literally go from completely dead to 100% in just over one hour. 30 minutes is nearly 60%. It slows a bit as you get nearer to 100% but it's insane enough that it makes up for the disappointing lack of wireless charging. P10 is faster than the S8+ as well. Samsung's fast charge (both wired and wireless) are nowhere near as fast.

Biggest thing I miss is the IP68 rating. I never got my S8+ wet but it was nice knowing I didn't have to worry about it. That'll likely be the only time it sees further use. If the OP5 ever has a problem or if we make a trip to the lake, or get a really stormy day.

TLDR In short - P10+ beat the S8+ and the OP5 beat them both. Your mileage will definitely vary based on what is important to you and how you use your phone.