I pulled out my old Nexus S and Nexus 5 phones today for some testing.
Nexus S conclusion: Cute little device that fits well in the hand, but that screen was incredibly smudgy. It finds oil on my fingers like no other device.
Nexus 5 conclusion: Still one of my favourites, good size, light, no case needed. And since I installed /e/OS on it a couple years ago, it’s nicer and runs Android 7 instead of 6 which is where Google stopped supporting it.