Dang...just two months ago I purchased the Phase 7 TruckLite headlight and driving lights. Cost over $450 bucks for the set. Now I find out I could have LED lighting without changing the housing? Talk about bummed.

Now, don't get me wrong. I love the light this set puts out.

It was a whole new early morning ride into work at 5:30 when it was still pitch dark then. I saw parts of the road to the side and ahead; I'd not had illuminated until changing the lights.
It would be an interesting exercise to do a comparison of the TruckLite or HD LED set up and the inexpensive bulb change on this thread. I believe so many things we put on our bikes are way overpriced; but that's just part of the territory and we suck it up and pay. It's really nice to see the possibility of this upgrade costing next to nothing.
Thanks for the info and reviews. I'm eager to see how they compair; if anyone is able to pull that together.