I have seen a few polls on different sites asking which phone do people prefer between the GS4 and HTC One. Almost every poll I have seen so far has the HTC One on top. If the One ends up being a great phone, This could really help HTC.
Here is an example from Android Central.
This week's sidebar poll: Samsung Galaxy S4 or HTC One? | Android Central
Here is another from Android Police.
[Weekend Poll] HTC One Or Galaxy S4?
This one is from this site. The only I have found so far that has the GS4 on top.
Android Forums - View Poll Results