Get the case I listed below. This case comes up even with the screen, protecting the edges real good, can still use the edge feature but gives close to flat screen experience. I have it now, I like the edge so not sure I'll keep it, but it does give the best edge protection of any screen with little bulk does.
Speck Products Presidio Clear Cell Phone Case for Samsung Galaxy S8 Plus - Clear/Clear https://www.amazon.com/dp/B06W55K72...ag=hawk-future-20&ascsubtag=UUacUvbUpU5777231
Speck Products Presidio Clear Cell Phone Case for Samsung Galaxy S8 Plus - Clear/Clear https://www.amazon.com/dp/B06W55K72...ag=hawk-future-20&ascsubtag=UUacUvbUpU5777231