If you guys like the IPFs, you'd be amazed by Cibies, Hellas, JW Speakers, or (especially) the new TruckLite LEDs. The IPFs were the WORST aftermarket lights I tested and not even legal to run. The Fatboy bulbs are equally illegal and achieve their illusion of "brightness/better performance" by moving the focal position of the filament --- think of a Maglight when you twist the bezel and have more light scattering but can't see better with it. A real high-performance bulb actually will have more lumens, better focus, and that's achieved by a smaller capsule, tighter filament windings, better gasses --- look at the new Phillips HIR1&2 bulbs or the Phillips Xtreme Power series of bulbs for inspiration.
Ryan --- If I can talk JW Speaker into a set of lights, would you volunteer your rig as a test platform? You'd have to come up here and stay 'til after dark one night.
I used Chris for the TruckLites and I don't think he wants to give them up. They set a high benchmark.
Stumpy has the 5x7 TruckLites and they work even better than the 7" round units.