One nice benefit to LED headlights, no relay or upgraded wiring harness is needed. They draw something like 1/3 the power that the OE incandescent head lights do.
My main problem with LED headlights is that although the light
output is okay, the
quality is not; a great many of the inexpensive options are marginal at rendering certain colors (and therefore objects) in the driving path, very artifact-heavy in their output, or both...and this is also true of the higher-end aftermarket stuff, for the most part. In the last year or so the OEM options have begun to produce decent light that can compete with a halogen lamp in terms of light quality, but as you're well aware: nothing in this world is free. If you want great light output and you want low current draw, you're going to pay a few hundred dollars per unit to get it (or buy a car with a good-performing set). Last I checked, an acceptable set of LED units for a TJ was about $600 for the pair (Speaker), and in terms of light quality, they're okay: I had a set, ran them for a few weeks, and then took them out because I didn't particularly like the beam pattern or how glaring they were on wet pavement. (I also duct-taped and wire-nutted an OEM Porsche projector/harness to my passenger lamp housing one time just to see what it would do, and HOLY FUCK...but that's another story.)
The main reason that LEDs got so popular was because the factory TJ headlights were abysmal - you could have strapped a pair of fireflies to the front of a Jeep and gotten better light output - and because the LED manufacturers were very smart to make their systems plug-and-play...so even Joe KnowNothing could slap a pair into his grille, look at how awesome they seemed to be, and then tell all of his buddies how his $100 LEDs were fuckin' insane bright, brah. That's literally all it took: a bunch of people with
information but no
understanding. You've heard that phrase before, yes?
Regardless, an LED is still an acceptable option for trail use, as you well know...but I, for one, will happily take a bit more current draw in exchange for what I consider to be better light output on the street. As usual, it's all a matter of what you consider to be valuable and acceptable, and we all have different standards for that...so, it's an anything-goes situation, in the end.
Except for LED light bars, which should be installed in the bottom of dumpsters.