Or T1-Rs, which are very similar apparently but I've actually tried them. They're good for what they are, but you sacrifice feel for grip in the wet, and they melt like buggery on track. Given the car's worth more than a few grand and the rubber is the only thing keeping me in contact with the road, I'm happy enough to pay for something decent if they allow me to get the most out of it.
If we could guarantee the weather I'd slap a set of A048s on there and be done with it, but I've lived with them on other cars in the past and they're just not suited to the English weather.