Well I was stupid last year and tried using the "high grip sand paper" method and totally ruined them. I went to napa and grabbed a pack of the CCP headlight restore kit and spent a bunch of time today and got most of the scratches out but the haze was still there and wasnt coming out. I had a bottle of plast-x from Meguiars, and started hand buffing them and they started looking better...however I wasnt completely satisfied, so I got the big ass buffer and put more plast-x on and VOILA, these look AMAZING!
Definatly use the plast-x after the restorer and you will be WOWED! (pictures tomorrow)
2001 Midnight Blue ZX3 - owned for 7 years.