I read your post in the other thread so I'll reply to this one, Go ahead, do it, best phone right now, as simple as that.
All phones will have some issues here and there, some defective units will always be shipped, like it has been said here, no phone will be 100% trouble free, the red tint that I think is the most wide spread "issue" was discarded by Samsung since the beginning as to be software fixed, so far it seems it's true, I was waiting for the update to see if I'd get a replacement as I had the "pinky" tint on the edges, but it was so subtle that I really didn't pay too much attention to it, but I'm glad to say that it was indeed fixed by simply moving a notch to the cooler side the new available settings. Some people will still complaint that it only fixes it on the Adaptive Display mode and it's true, so for those people the only option will be to get a replacement and see if it's better for them.
For the rest of "issues", I haven't seen any other, not on mine or in the other 3 S8 that I interact in a daily basis here at work and at home.