Are these discs any good?

Im gonna be upgrading to Cossie Discs and was wondering if these are gonna be ok to go on?

Manufacturer : Black Diamond

Category : Black Diamond Discs - Combis Front

Sub-category : BDFC - Ford

Application : Sierra/Sapphire RS Cosworth 86-90

Product Code: KBD052C

Details : Vented disc. Diam = 283mm ; Thickness = 24mm



I have read that some drilled discs are prone to cracking, would i be better going for just the grooved discs or the combi ones?
Drilled Combi Grooved



Im gonna be using the car for mainly road use but the odd track session in the summer. Can anybody recommend me some decent pads as well?

thanks peeps