Well I hope you enjoy your new VW, it shouldnt really be on the cards if you were after a coupe as its a hatch, as for the RCZR interior, yes I have a tendency to agree with you, it would have been nice if they would have given it the facelifted 308's interior but they kept it the same as the original, tbh I dont notice it unless i go between the 208 and the RCZR (its mainly the touch screen which is a vast improvement and the steering wheel where you look over it in the 208, way ahead of its time).
I know the golf drivers said half the stuff i put down didnt matter, but it does, having come from a car with 310+bhp (standard power btw even though 280ps was quoted), and awd, 25-28mpg was the usual on a run, the Golf R is better but not as much as you would think (vw's fuel figures have always been laughable), which adds to running costs.
Insurance is pretty similar on both the Golf and the RCZR, about 4 quid in it considering the RCZR is a few groups higher, and I dont expect someone to kick my front door in the the RCZR, the Golf.... it will be the more desirable car due to the fact its a little more practical.
Overall driving experience, the RCZR is near faultless, its not 100% perfect but you forget about that, its seriously good fun and you get a nearly fully equipped car for the price compared to the golf which is spartan in comparision until you throw another 8-10k at it.
I will also warn you about the tfsi engines, dont do short journeys in them, people will say the prince engine is bad for coking up but the tfsi's are seriously bad at it (well proven and documented), another reason I avoid vw, even though you cannot fault their build quality, reliability is another issue (long gone are the days of vw reliability, or german reliability in general). My Subaru's were all pretty reliable (then again they were all 2ltr engines and not the chocolate 2.5's) and I have had no major issues with the 12 or so peugeots I have owned (except 1 head gasket on a 10+ year old car which was easy to sort out).
Have fun with your Golf R, its not a bad car, just not for me v the RCZR (it was a no brainer actually for what i wanted).
Oh and dont let them tell you that awd will save you in the snow, it wont unless you have winter/snow tyres on (same with fwd or rwd), been there, done it.