Your question is very general. Or maybe it's just the weekend?
Anyway, what are your intentions?
Bigger rotors look good, but are only necessary if you have a heat management problem. Have you ever experienced fade? Or do you just want the extra confidence that larger brakes can give you?
If you ever plan to autocross, realize that bigger brakes might knock you out of a competitive class.
Good pads (so I've heard): Mintex A/F, Performance Friction Carbon Metallic Street, EBC Greenstuff, Etc.
Good Rotors (so I've heard): Raybestos, EBC.
Suggested Reading:
Big Brakes and ABS Braking Systems...In Plain English Rotors HTH