Its the best flagship phone from htc till now when compared to it predecessors.m9 has a lot of features but not that much as a samsung flagships have.camera is good and it is quite good against the sunlight unlike all the other smartphones.and sound is quite good with dolby and boomsound.unlike m7 it does not have any problem with the ultrapixel camera.
Htc sense 7 is the highlight of the phone.the only thing that bothers me is the battery backup which is the most useful aspect of any smartphones.
As usual about the htc one flagship models heating issue.