There are several headlight kits on the market whats the difference between them?
Very little. Sandpaper is sandpaper no matter which caveman you buy it from. It all has a non reversible destructive effect on the headlight lens surface and all low tech abrasive sandpaper kits and polish require an excessive amount of work. One difference is some offer sealers which are a necessary visual component once you cloud the lens with scratches from abrasive systems.