Test drive both, and you'll walk away with the RS. The 5 pot engine is what makes it special, however keep in mind the price of an extended warranty which imo is essential for the RS.
With the RS it'll keep it's value more than the S3 aswell.
Why have a scabby sirlion when you can have prime...
Are you sure it's around 70'00 HKD for the virtual cockpit?
Thats around £7k, which is absolutely insane!
The car, virtual cockpit and a couple of other essential options and your at £100k.
Second hand super car money!