Had Samsung phones before, they're good but bloated and there's nothing striking about the new one.
Read/watched reviews of both the G6 and the P10 Plus, G6 is more expensive for little gain. The 0.2" diagonal difference is not something you're going to notice in use, wireless charging is a nice idea but not a deal breaker. Going by the reviews LG's camera is not so good and it has a smaller battery.
P10P has stereo speakers and Corning Gorilla glass 5 as opposed to 3 on the LG (no idea if that's better or not)
My girlfriend has had Samsung and now has the p10 plus. Samsung was bloated yes. But you should see the p10+ it has so much crap on it and most of the apps are duped but by different Devs. I was happy that i could disable/uninstall most of it though