i got 2 pairs of these. H4. i'm also planning to get H11 for the fogs
multi-sided don't work because they don't match the filament location of the original bulb. but this Nighteye attempts to replicate the original filament by using strings of LEDs. and the LEDs aren't the domed type (referred to in the industry as "HI"). i.e. there's no magnifying lens over each LED so each LED behaves like a point source (lenses enlarge the apparent size of the LED). this better approximates the original filament