Computer wise I cant tell the difference on my Phillips 190X6 It has both, with the HDMI to the computer and the standard monitor cable to the KVA switch for when machines in for repair are hooked up.
I imagine this mill be much the same HDMI/SCART- each carries component data RGB audio on separate channels as opposed to single wire RCA type cable.
So IMHO go for the SCART and leave it at that.
There is so much else that can affect image quality
both electrically/electronically- room viewing conditions and last but not least the viewer- not many of the population can claim 20 20 vision.