I spent some time with the HTC One (M8) yesterday, and had an amazing time. However you want to look at it, the M8 is a striking smartphone. The metallic shell is a work of art. There is a lot of attention to details. It looks splendid. It feels superb. And it fits in the hand comfortably. It is the sort of phone that any high flier would want to be seen with.
On the software end, HTC has customised Android OS to a superb level of finese. Their Sense UI 6.0 feels light and fast and is very easy on the eyes. Interaction is smooth and nice. This unit had Android 4.4.2 KitKat running.
I am a huge fan of front-facing speakers and of stereo speakers. The HTC One has both. I immediately dived in to play some tracks. Boy! I was blown away at the audio quality. It reminded me of the stereo speakers on the BlackBerry Z30.
Here are some more pictures from my interaction with the HTC One (M8):
I really do believe that the HTC One (M8) is an excellent flagship device.