While my Nexus 5 wasn't actually my first Android phone, it might as well have been. After a Froyo phone and a Samsung POS, my Nexus 5 showed me just how great an Android phone can be. The screen, the responsiveness, the size were all perfect. I was proud to show iPhone fanboys/girls how my Nexus could match their devices, and even do things that theirs couldn't.
Now that my Nexus 5 is starting to get a little long in the tooth, I'm thinking about a replacement. I don't want a 6 or 6P, because they don't fit in my pockets. An updated 5, with all the new capabilities, would be perfect.