jkeever was nice enough to come out and demo the LED lights for me.
We parked his 2005 TJ to the left of my 2008 JK on a dark road. I placed a pair of identical stuffed dogs on the road, one directly in front of each Jeep, just out of range of my headlights.
The LED lights have the "wow" and "cool" factor; the color temperature is quite high but their operating temperature is very low.
The beam spread was very difficult for jkeever to adjust and has very pronounced cut-offs.
JK with Phillips Visionplus +50 headlights on lowbeam:
TJ with Truck-lite LED on lowbeam:
Visionplus highbeam:
Truck-lite LED highbeam:
And last, my JK with just the HIDx 4" 35w driving lights on. Color temperature is 6000K:
I could see the Truck-lite LEDs being attractive for a driver that wants the newest technology and doesn't commute on twisty dark 2-lane roads. Their throw is excellent but the spread is marginal; I also don't believe the color temperature would favor fog.
A big thanks to jkeever for the demo.