i use normally full sharp but seing genesis videos that the dithering is used in many games for that system, so i tried the full dithered and damn, it has more colors than the raw image lol, so i personally use for extra colors, if only wanted transparency, the game already has tranparency for transparent objects, if i want tho not see dithering i whould use the tv filtered option, some transparent objects like the waterfall has more colors with the tv filter on and it's looks more cooler than the rew image one