First off, I know it's android and HTC, I owned the EVO 3D and after reading the reviews I believed it really couldn't disappoint me as a mobile device / tool. The internals were top end. They both do email. They both do chat. They both have browsers. The 2 things that were really important to me, after the EVO3D BS Camera, was a decent camera and a larger screen. When I found out that the HTC had a great audio system, well that just drove me closer to deciding on the One.
I knew I didn't like the feel of the GSIII because my brother has it, so that was a minus for it right there. Plastic and too light.
So, onto why the One over the S4
1) The Look and Feel.
2) The Audio System
3) The Look and Feel
4) Low Light Camera
5) The Look and Feel
This phone just feels great, looks professional and does everything I need. Plus it has an outstanding screen, above the competition audio, a camera that fits my needs and it's the underdog.
Go HTC One!!!