FWIW, when I replace pads, I like the ceramics over other varieties (organic, semi metallics, carbon metallic, etc). They stop well and don't dust as badly as other choices IMHO.
For rotors, Brembo solid blanks do well (not blingy though).
I don't know how much the conversions like Matt talked about are. In between (price-wise) would be take-off New Edge PBR calipers.