Need advice: Big difference between 75hz/IPS (GT72S) and 120hz/5ms (GT72VR) displays?

I am using a GT72S with an external 144hz Asus monitor. I got so used to its 1ms responsetime, that when I play on the notebookdisplay I immediately see motion blur in any game, even at 75fps.
(according to notebookcheck this display has 40ms responsetime....)

How about the new 120hz/5ms displays?
I am thinking about selling it and upgrade to GT72VR with the 5ms display.

--> But is it really worth to upgrade just for the display quality? (I am 100% happy with the power of my GT72S...)
-->...

Need advice: Big difference between 75hz/IPS (GT72S) and 120hz/5ms (GT72VR) displays?

Need advice: Big difference between 75hz/IPS (GT72S) and 120hz/5ms (GT72VR) displays?