I'm using EBC Turbo grooved(n dimpled) with EBC Redstuffs on the front with standard caliper and completely standard on the rear. Brakes seem balanced and v efficient at all temperatures. Think I will go for red stuffs on the rear when I change. This setup IMOP seems to be a very good first stage upgrade before going the whole hog and blinging your calipers.
Brakes hard and firm... be prepared for the indicative groove drone when hard braking from 80+ (suprised me!) now makes me smile.