I think the connection issues may be overblown. I'm not saying people aren't having problems, but I've had a P6P and a P7P and neither have had issues with 5G connections in the US or abroad. My P6P was passed to a family member who's still using it and hasn't had any issues.
I personally don't like any skins, and OneUI drives me nuts. It feels like they move stuff around just to play with your mind. I would also swear Samsung bakes ads into its apps. I also don't appreciate the Apple like ecosystem of our stuff only fully works with our stuff, e.g. Galaxy Watch and ECG.
Just my $0.02.
I do miss Windows Phone. It was awesome and the Nokia I had was one of my favorite phones. I mean, I’m sure Microsoft would have destroyed it if they didn’t already kill it, but I did love it.