Issues:
1. HTC sense has crashed on me when changing themes
2. Some themes have parts which don't work: example...some weather clocks don't load at all and change to the default
3. The 5 dots on the bottom of the screen for home pages stay on all the time. In my M8 they only come on when flipping through home pages
4. I miss the Gallery App. Google Photos is a great app but a terrible replacement for the gallery app. It's slow, hard to find folders
5. Not as many settings available when pulling down the notifications bar. I miss the sound profile setting being there.
6. The weather clock is smaller than on my M8. It squishes the weather icons and clock when using themes.
7. After a few days with the phone, the battery life is not so great.
8. My M8 screen is brighter
9. Hard to see screen in daylight
Things I like:
1 Camera so far seems nice
2. Great build quality
3. Music is really great with headphones
4. Great fingerprint scanner