Hiya!
I test drove a Golf R & RS3 when making a decision about which I should dig a hole in my wallet for. The Golf was lovely, but as Dan said above, the power and sound from the RS3 was like no other. For me, personally, the virtual cockpit and interior build quality were major selling points over rivals. It really is sublime..
All the best!
Thanks. Yep, the Audi interior is lovely. The virtual cockpit is certainly nicer than the 'basic but functional' one in the 7.5R, but it will be a game of leapfrog within the VAG group over the next few years. VW have already upgraded for 2018 (higher res display, different screen layout) - as seen in the new Polo GTI (looks like a cracking little car btw) and the T-Roc. However, I'm sure Audi will remain at the top of the food chain!