I'm looking to buy one of these consoles in the coming months for the arrival of Witcher 3 (I know PC would be best but I'll stick with console for convenience).
#PCMasterRace
Onto the question of gfx, am I likely to notice much gain on the PS4??
Depends. In general? Yes. Specific to the
The Witcher 3: Wild Hunt (CD Projekt RED, 2015) I do not know.
I know as developers get more time with the hardware results improve, meaning the XO shouldn't be that far behind.
Sorry, but this is not how it works. While developers get
more from the Xbox One if we apply the same logic to the PlayStation 4 it means that developers will get
more from that.
There will always be a performance gap, if anything it will increase.
Is there anything that should sway me more to one than the other, e.g. noise?
I have not noticed either to be 'loud', considering the majority of the time they are on I am playing a game

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Personal choice comes in to it in regards to what games you enjoy playing, but I find the exclusives
better on PlayStation 4.
The PlayStation 4 is more powerful (increased performance), better value for money, and better exclusive titles (in my humble opinion).
The main crux as to why you buy a console should not be over controllers, power, money but should hinge on the exclusives for that console.
You will get used to the controllers, you will earn more money and games do not look/perform terribly on any of the 'new generation'. Look at the exclusive developers and titles and decide on that.
I would still advise you get a PlayStation 4 if you have made up your mind about not getting it on PC

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