Sunday I went from the Samsung Note 3 to the Samsung Galaxy S5. I can't say anything bad about the Note 3. Only thing is sometimes it's too big, especially if you're going to the beach or doing things where you don't have many pockets.
Right now I have to say the camera on the S5 is the best I've ever seen on any phone I've had. Which I've had iPhone 3g, iPhone 4, Atrix, Galaxy S3, S4, Note 3.... Was impressed doing some video while driving in the rain tonight. Working on a video now.
The only thing I think might make me miss the Note 3 could be battery life. Although I'm still putting the S5 through it's paces. It's close to where the Note 3 would be.