Re: Lets talk worst... mods, bad mods, regret mods, not worth the money....
Totally regret replacing my stock fog lights (one of which had been broken by a rock), with Spyder Fogs w/Halo ring (which cost about $100-$120).
They came in a plain cardboard box with a single sticker. No instructions, no labels on the wires. I ended up only wiring the main lights, and not even bothering figuring out the halos. It also turned out that the lens body isn't sealed in the back, so they filled with water and dirt. After a year, the glass lens fell off of one. Total garbage.
I'm about to reattach the glass now with PL9000, and seal the bodies myself with some Silicone caulking. Maybe I'll even get around to wiring up the halos this time, make them a halfway decent fog light.
I would never touch their products again.