why did you buy a phone with a 4Mp camera, in the first place?
also, very honestly, your thread title should be changed to reflect your needs, and not highlight the fact that you bought the HTC one earlier, you can mention the HTC One was not up to the mark in your camera needs from a phone...
the best camera still is the iphone IMO.... unless you go for the more camera less phone types Nokia 41Mp phones etc.
if you have nothing against iOS , wait for the 5s and pick it up!!