Upgraded from the S4 so I might be a little biased but I am really enjoying the S8+. Glad I went with the plus. I thought it might be a little too big but it totally isn't. Fits my hand well but I also have large hands so your experience may be different. The screen is so nice with plenty of space to multi task.
I switched from the iPhone and I love It! I thought you could change the text message bubble colors so I was disappointed you couldn't but other than that I'm happy I switched!