For those who think that the Cayman GT4 isn't fast enough, Porsche have adorned it with their fabled RS badging to produced one of the greatest track day cars of all time.
The 4 litre flat-6 from the GT3 has a 9000rpm redline, and sounds amazing along the way. With 500hp and hitting 0-100kmh in 3.4 sec, it's noticably quicker than the base GT4. A Nurburgring lap is despatched in just over 7 minutes. As with Porsche's other RS products, there's no manual, just PDK.
Despite already being an RS, the 'Weissach' pack is a £10k option, not to mention the additional £10k required for Magnesium wheels. Perhaps just stick with the no-cost 'Clubsport' pack instead.
At £112k in the UK, it's £37k more than a plain GT4, but £20k cheaper than a 911 GT3. Value depends how you look at it!