What's the One IPhone that brings the Most Nostalga?

So I've heard from some people in other community's or just other people who have certain interests say the most nostalgic iPhone for em was the iPhone 6 or the 7 or probably even the 8 however there were more before that so it brings us to another question what was the most nostalgic iPhone for you

If you had to pick outta the three or of you're own choosing

Which one would you choose the iPhone 5 6 or 7