Touchwiz looks just fine on the S6. always had nova on my devices anyway. Never ruined any experience for me. It's overrated for those who moan about it.
After seeing videos of the latest touch wiz and sense, I actually prefer touch wiz. People keep saying sense is light and while that may be true there are some pretty big changes. For one the app drawer scrolls up and down. Isn't that like... Pre-ice cream sandwich? Also, I actually don't like how sense has their menus and pull down settings. It looks clunky. Also hate the way sense does the app switcher. You get nine tiles that look hard to recognize.
Whereas the new touch wiz somehow looks cleaner to me. There are more transparencies and color coordinated settings/menus. Likewise I like that touch wiz keeps the app switcher style from lollipop (the roller dex thing). Also like the way they keep closer to lollipop in the app drawer.
And at the end of the day, doesn't touch wiz offer more features? Like split screen multitasking , etc.
Anyway, all subjective and my opinion.
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Metal used in the gs6 is 1.5 times stronger then competition!
http://www.androidauthority.com/samsung-explains-galaxy-s6-edge-metal-glass-592800/
I bet there will be people on youtube bending this thing regardless.