Brembo fronts = very good. Maybe the best and already on some V-rods and Harley baggers. I think very highly of Brembo products in general. I have a 2000 Toyota Tundra pick up and they are notorious for warping their front discs. Get 'em trued and in 10-20k miles they would be warped again. I bought a set of Brembo rotors for the truck and after 45k miles they are still smooth and steady. They weren't cheap though.
Harley late model rear brakes are already some of the best you can get. No need to upgrade those. Brembo rears might be better but the HD rears are already more than good enough in my opinion. Maybe get some Lyndall pads. Those are nice.