Welcome to Android Central! The Nexus 5 might be worth considering--it's a little smaller than the Turbo (4.95" screen), but will still give you great performance. It's lightweight, and doesn't feel big at all.
I saw your other post--the Droid Mini will probably be fine, but it's pretty old by now, and most likely won't get any more system updates. You could also check out the Sony Xperia Z3 Compact, which has a 4.6" screen.
The original Moto G has a 4.5" screen, and although it's aimed at the budget market, it's still a pretty capable phone.
07-07-2015 02:35 AM