I ended up buying a Sony Xperia Z1 Compact (amami). It's damn near the same specs of a Nexus 5 except it actually fits in my hand (5.0"x2.56"x0.37"). Works flawlessly with Cyanogenmod. Best purchase I ever made. I bought two of them I liked it so much. Good on Sony for making an excellent smartphone.
If I have to use two hands to handle it, it's not a phone, it's a tablet.
I suppose there is still a market for people like me to have a single touchscreen device and not worrying about it being redundant to some other device category that I haven't even acknowledged.
Tablets are fantastic, so much more useful. So much easier to carry around. Sure, a laptop is perfectly fine, so is a desktop in one room. But if you travel a lot, then they are so much better.
And since you could get a reasonable tablet for $99, you don't have to be too wealthy to appreciate it.
I have a G as a backup phone, and it is a great small phone. If I wasn't used to the performance of my X, I could definitely live with the G. Great screen, fast enough, takes an SD card, near-stock Android.