@BrApple - Optics do not change the current draw of the bulb and only focus output. Wattage is wattage. 200w of power will make the idle change as you are loading up your alternator.
If you are using a 'driving' beam pattern the light will flare in fog and essentially make you blind. 'Fog' beam patterns are flat and do not allow stray light up and down to prevent light flare, helping you see in incliment weather. 'Driving' lights are setup like highbeams in that all light is directed out, not cut off. The exception to the rule is a projector based light as those can create a pencil or spot beam without stray light. What you describe makes no sense. I don't get why I have to explain this to you, you should know better.
Real fog lights have bulbs with a shield on them (like low beam bulbs) driving lights do not (like high beam bulbs).
To those who reccomended a set of driving lights instead of these, I have already gone through 1 set of Hella Optilux 4" lights in the fog holes, and 2 sets of Walmart lights. The roads are simply too rough in the UP, and rocks crack the lenses in a matter of months. I'm done spending money on lights that will break, and now have a setup that may not look very nice, but is incredibly functional. I can see farther over crests because the lights are mounted high, and farther due to the more ideal optics of larger reflectors. I could spend a couple hundred on a set of projector fogs, brackets, and shields, or I could spend less than $100 and have much better lighting. Not to mention I'm not blinding people with HID's, and I'm making the roads safer for me. The existing set I bought second hand for $25, and the 2nd set from Amazon for $63. My car is rusting out, the paint is in terrible shape, and it's worth maybe $1500. I'm not going to spend a lot of money on it.
I don't care if most of you don't like them. These will at least be used compared to most of the R.I.C.E. lights on SUV's today. They have already lit up 5 deer on my trip from Houghton to Muskegon. Another set of 500FF's are on order for the center and the current 500's are going on the outside for corner lighting.
I really need to pull the bar off and paint everything and then fab up a bumper support to keep the lights from vibrating.
Here is the light output with lows+highs+500s