Touchwiz with a custom launcher is completely fine. I actually ended up getting a note 5 because Samsung phones have a killer feature that I can't get anywhere

Touchwiz with a custom launcher is completely fine. I actually ended up getting a note 5 because Samsung phones have a killer feature that I can't get anywhere else (yet), which is multi window. Being able to browse internet/reddit/hn and watch TV shows or netflix is an absolute necessity to me and at the time, I couldn't find any other phones that had it. So in my case, TouchWiz + a launcher actually provided me value that I couldn't get through other Android phones.