Actually, already do; S10e. Love the size of the phone as it's not monster sized like nearly all current iPhones (and nearly all Android phones). Headphone jack, fingerprint scanner on the power button (jesus, how is this not done more often, its such an obvious spot to put the scanner!), microSD card, great cameras (even if 'dated') excellent video quality. My only gripe with the phone is the selfie camera; it's not wide angle. In fact, seems like nearly all phones have a stupid focal length for selfies. I had a Sony XZ1 Compact before this phone and I could easily get amazing and fun photos of me and my girlfriend with the entire background behind us. Now? I have to flip the phone around and use the rear cameras and HOPE the photo is framed right.
Honestly, there's no such thing as a great smartphone. I miss my Sony XZ1C, but it had it's flaws; no wifi calling, lack of certain LTE bands for my carrier, no OIS, difficult to type on and poor photo quality with only one focal length on the rear camera. I used it for over 4 years though, the size was TRULY a compact phone and one handed uses was actually doable and easy, even with longer fingers.
I just don't understand why manufacturers can't make a compact phone with near flagship specs. I can't imagine owning a new iPhone and trying to cram it into my pocket and then walking around with a stupid bulge. Embarrassing.