Basically he says:
- white is better
- not waterproof, what a pity
- multitasking, Android L style
- larger font on screen
- he likes Gmail last version
- note edge not good for left handed people
- not comfortable for small screen gesture
- swipe in and out window for menu back and home buttons
- display of vanilla version slightly better than edge version, white slightly brighter, and more space for photos
- he wouldn't but coming from note 3 (actually he says he will but just because he's a geek. also says that coming from note 2 it could be an advancement)