Same I don't see brand either I see the value, design and additional features then decided xpz is not my cup of tea because screen too small, bezel too thick, 960 fps video useless for me., 
Based on gsmarena review s8 vs LG g6 vs Xperia xz premium

Design
Winner: Samsung Galaxy S8. In this most refined incarnation of the dual-edge concept the Galaxy S8 is the most posh looking phone here, all the while being reasonably comfortable to handle. The fingerprint reader is obviously in the wrong place, though. The G6 feels bulkier, but offers a more secure grip thanks to fatter sides and flat screen, and undoubtedly a better placed fingerprint sensor. The XZ Premium isn't keeping up with the edge-to-edge trends this year when even Sony's own XA1 Ultra has gone on a diet and has shed the side bezels for a more modern look.

Display
Winner: Tie between the Samsung Galaxy S8 and the Sony Xperia XZ Premium. The S8 wins in brightness, contrast and outdoor visibility. The Premium is the sharpest by far, has the most usable screen area and allows streaming in 2160p across various services. The G6 supports Dolby Vision on top of the other two's HDR 10, but that's as much as it's got on the competition.

Battery life
Winner: Samsung Galaxy S8. The Samsung handset manages the best endurance with the smallest battery and has comprehensive battery saver options. The Xperia is similarly well-equipped in terms of battery saving features, but it's not as long lasting. The G6 is just average in both areas.

Connectivity
Winner: Samsung Galaxy S8. The G6 takes a hit for its older chipset that lacks Gigabit LTE and Bluetooth 5.0, while the S8 and XZ Premium sport the chips of the day and are mostly tied. Until the S8 pulls out its DeX trump card - of course, a handful of people will get one, but the option is there for those that want to.

Software
Winner: Tie between the Sony Xperia XZ Premium and the Samsung Galaxy S8. The XZ Premium will appeal to purists, while the S8 is the most feature-packed. The G6 offers little on top of stock Android, but is thoroughly redesigned nonetheless.

Loudspeaker
Winner: Tough one. We'd call it a tie as none really excels. The Xperia has stereo speakers going for it, but they're pretty quiet; the G6 is loud, at the expense of distortion at maximum volume; the S8 is the most balanced, but we can't call it a winner, when it doesn't have stereo speakers, and a competitor does.

Audio quality
Winner: Samsung Galaxy S8. The loudest output with the least degradation in quality when under load comes from the Samsung headset.

Performance
Winner: Samsung Galaxy S8. A predictable showing from the three phones in the benchmarks - the Galaxy S8 in Exynos trim is the usual chart-topper, followed closely by the Snapdragon 835-powered S8 and the Xperia XZ Premium. The LG G6 does the best with what it's got, but the last gen chip can't compete in the numbers game. That said, you'd be hard-pressed to find a substantial difference in the behavior of the devices in actual use.

Camera
Winner: Tie. The S8 has remarkable noise reduction that cancels out noise without affecting edge detail. It's also got the dual pixel autofocus, which is unmatched for speed and accuracy. The Xperia can capture an abundance of detail, has the widest dynamic range (even if by a small margin) and you can rely on Superior Auto to pick the right scene mode for you. The G6 deserves praise for what it achieves with the smallest sensor here - fine detail, well-controlled noise, good dynamic range. Not to mention that it's got two of them rear cams and the wide-angle one is massive fun to shoot with.

Camera HDR
Winner: Tie. All are decent, but far from remarkable. The S8 has a live preview, which is nice, the Xperia will handle HDR for you in Superior Auto, while the LG is a bit awkward in changing modes, but all of these are too minor to make a difference.

Camera low light with tripod

Winner: Sony Xperia XZ Premium. When properly supported on a tripod and in Manual mode (it's basically shutter priority, but still), the Xperia is capable of producing excellent low-light shots with total detail levels unmatched by the other two. The G6 may resolve a tiny bit more on a per-pixel level when shot from the same spot, but walk a few steps to frame the same composition on the Xperia, and the G6's longer lens advantage disappears. The Galaxy S8 can't compete for detail, but it's also got the lowest noise. Just make sure you don't go slower than 1/4s because the heavier noise reduction eradicates all intricate detail.

Camera panorama
Winner: Tie between the Samsung Galaxy S8 and the LG G6. The S8 is the sharpest but has that pesky exposure stitching ruining its shots, while the G6 has stitching issues on a local level. The Xperia doesn't stitch flawlessly either and is got the softest image.

Camera selfie
Winner: Samsung Galaxy S8. You may need to learn its autofocusing quirks, but once you do, the S8 will reward you with the most pleasing images of the three.

Video low light
Winner: Tie. To each their own. The G6 is a bit dark, but it's probably the most expressive here. The S8's footage is pleasantly punchy out of the box, while the more laid-back Xperia could use a boost of contrast, but some will appreciate its natural look.