Samsung S8 is a spectacular phone but I personally don't believe it's that much of an upgrade from it's predecessor. The battery life is actually worse compared to the S7 because of the larger screen size, the camera is actually identical to the S7 except some minor post processing tweaks. It does come with a stronger and a more power efficient CPU though, which means less overheating issues and a longer battery life in general.
Not to be misunderstood, it's a spectacular phone, but I wish it offered more compared to the last S series model.
The new S9 is rumored to be much more of an upgrade, especially in the camera department so photography and videography enthusiasts like myself will opt for the S9 model rather than the S8.
A fantastic informative post, keep it up.
RE: Tech Review #4 - Samsung Galaxy S8