I ordered a GS6 but now am thinking about the note 4. which is better
Welcome to the forums!
It just depends on how you use the phone, etc. The S line has always been different than the Note line.
I would suggest registering and then going to both forums, maybe starting a thread in each and asking the users what they like best about each device.
Myself, even though I've had phones in the S and Note lines, I'm very partial to the Note. I love the large screen, I love the battery time, I love the spen.