I'm on my second set, and I only replaced the first because I was concerned how they would go in a RWC.
I've got good mileage out of them (20k+), including some time on the race track (club sprints only). They don't like being caned (as on the track), but as a general on-road high performance tyre, I've yet to fault them.
They're probably not as good overall as Bridgie 520s or whatever those Bridgies are on the HSVs, but those Bridgies are not twice as good (I think they cost about twice as much).
A good bang-for-your-buck performance tyre, IMHO.