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They're really nice. I run their discs with Bendix pads (from PDQ Motorcycles) which are also excellent. All Bike Engineering (ABE) are metallurgy specialists, so you really do get the best. Pricewise, they cost me less than half of Honda's prices.
I have found EBC pads to be just awful on feel and feedback, and rattly too. Bendix or Carbon Lorraine are the only ones I will buy. I haven't tried EBC discs, but I don't intend to.
Discs from here will be much better quality. Their prices are decent, and their products are made here in London. I run their discs on my Fireblade.
http://www.allbikeengineering.co.uk/
You'll need new pads as the warped disc will have made the braking surface of the pad sloped/uneven.