Its funny how many people here came from a commodore background.
I was a Commodore man, at the same stage my mate bought a 150rwkw VR SS. Ive since had a range of imports from GTST to GT-R.
You're not sacrificing power or speed, a GTST will make more power and be much faster due to power to weight, not to mention handle much better etc. A stocker GTST will pretty much dust a 185kw VR Clubsport, you really can't lose when compared to a 3.8L VT.