I drove a 4S and GTS before I got my GTS and I could tell the 4S had a softer ride in Normal mode. I too prefer the firmer ride of the GTS in normal modes. Also I believe there is more rear power bias than any other model which I guess you would only notice in a track.
I have it on my Taycan although I now suspect the cowboy fitter who did my widow tints used PPF as there is distortion looking from the inside. I'm getting it replaced after the winter with a brand Xpel sell in France and my PPF installed has it on their car. I've seen it and you can't tell...
69 new Taycans for sale in France at the moment which is only a bit higher than when I ordered mine. There is only 8 GTS Sport Turismos lime mine and cheapest is 13k euros more than I paid for mine.
So the UK market is very different to France.
Love it. I guess you need to appreciate Lego to like these non Technic models.
Here's the MOC Plans for the Taycan. https://rebrickable.com/mocs/MOC-115503/thegbrix/porsche-taycan-3in1-saloon-cross-turismo-sport-turismo-white/#details
I have a Neptune GTS ST and I love the colour. No regrets. Crayon doesn't do it for me too boring.
Most of your config is the same as mine., same wheels etc. I have the GTS interior and love that too. The 18 way seats are much nicer that the 14 in my opinion. Makes the car feel a bit different...
This is common on many cars. My wife's flat white Peugeot has noticeably different coloured bumpers. It was the first thing I checked when my Taycan was delivered and there is no difference in colour in ant lighting. I suspect it is easier to match a non metallic colour. Mine is Neptune.