I suggest if you want a faster tyre you use a 25mm Michelin Pro Race.
+1, best tyres I've used at a sensible price. Durable as well, I'm still using a Pro Race 3 (23mm) on the front of one set of wheels that I put on in July and has done about 4000Km. Not bad for a 200 ish gram tyre. The rear managed about 3000.
I'm going to disagree about the durability of the Pro Race 3.
It's my summer tyre of choice, and they 'feel' fast and responsive and all, but durability has been poor here. They seem to suck in every little bit of sharp road grit, which leaves little cuts on them but more importantly, the litle bit of sharp grit which worms its way through to the inside. A visual inspection of the tyre will be OK, showing some minor cuts in the rubber, and a grope around the inside is OK. But there's nasty pointy sharp thing embedded inside the rubber.
Come autmn, these *need* to come off, otherwise I have multiple faerie visits on a 200k ride.
This may be specific to my roads, which are a bit rough and pot-holley with lots of loose sharp grit and stuff esp. around winter.
But really, except perhaps on smooth tarmac, I can't rate their durability.