Doesn't seem like your questions were directly answered and this thread went on a tangent. I changed my fog lights out to LED (and low beams to HID), have had them for coming up on two years, and have been many places with them.
Changing out the low beams to HIDs were amazing. I can see so much better. I got the 50W HID kit from DDM Tuning. I should note, I originally got the
DDM 55W HID kit, and after a year, the bulb color faded, the output level significantly dropped, and after I took the kit out, noticed there was corrosion on both ballast connectors only on the power wire side. DDM was pretty shitty about honoring their warranty on this claiming I had water damage, but it wasn't water damage. So I changed to the
Ultra 55W HID kit and now they are so much better.
Swapping out the fog lights, I used
these bulbs (I'm pretty sure). Anyway, the color of the bulb looks nice, however, the problem I'm having is the fog light housing on our 4Runners does not distribute the light straight out in a beam pattern, but more of a flood. So when I'm in the mountains driving on the dark roads, the HIDs illuminate the road very well (seriously, it's so nice). When I turn on the fog lights, I see the surround areas immediately in front of me illuminate (the tops of trees, the bushes to the sides, etc...). Over Christmas, I took a road trip from California to Colorado, passing through Utah. Driving through the Capitol Reef National Park, I hit a snow storm and was driving maybe 10mph max. The HIDs were helping, but the fog lights were not because they scattered everywhere. I believe the theory behind fog lights are that they are supposed to be a version of headlights that are lower to the ground, but it doesn't seem like there's enough engineering in the fog light housing to actually disperse the light straight out and down, rather than flood the area immediately in front of you. I still have the fog lights and use them on dark roads, but if I'm in snow (or ironically fog), I turn the fog lights off and just rely on the low beams. If you haven't already done so, I would highly recommend changing out your low beams to HIDs. What a significant difference they made. Hopefully this helps.