The one regret of my 260 ownership was that I never managed to get hold of any xpowers. Although funnily enough, I noticed that the 260 even on standard exhausts sounds much meatier (V8 rumble) than the VXR8 with standards. So I'm now looking to get an upgraded exhaust, the cost of which makes xpowers look like an incredible bargain:
Over £2,000 for a switchable exhaust
Anyway, I'll keep an eye on the meets and bring it along one day...