Quoted from hailrazer:I use frosted in all the inserts. Frosted diffuses the light and makes the insert light up evenly. With clear you will get a round "spot" light effect on a lot of inserts.
Flat top frosted for backglass. Eliminates the spot light effect and looks more like incandescents.
Agreed and why im not a fan of the remakes with the smd boards ..... the inserts look odd and are to dam bright with hot spots.