It's a great device, certainly a worthy successor to the m7, if you've had any time with that.
- screen is gorgeous (if not for lacking a little bit of space due to the on screen buttons)
- the camera effects are a treat and fun to play with. For the most part they work pretty well. 4 megapixels is a shortcoming though, regardless of the ultra pixel size
- gestures work (they are take it or leave it though, if you use them you love them, if you don't you can do without them)
- BoomSound kicks and is an improvement over thevbeats audio sound profile
- OS is extremely quick no lag whatsoever even on bloated stock roms
- touch screen is extremely sensitive (maybe a touch too sensitive)
- ample built in storage + sdcard =
- BlinkFeed much improved over initial versions
There's definitely more I could say but I'm sure it's all stuff you've read in reviews, so I will just give my personal opinion: It's friggin awesome!
As with the m7, the m8 has a very robust development and theme community (in the international m8 forum), however, there's always room for LeeDroid!