Morimoto M LED
Output: We'll just start with the hotspot. It's on par with the Mini D2S 4.0 and a XB 45K Bulb / XB55 ballast, and about 20% brighter than it's closest LED-based competitor: the i-lens. The Kuria optic clear lens and curved cutoff shield produce a beam pattern that's plenty wide, with an ECE-sloped cutoff that's super sharp, colorful. Rather than off-the-shelf LED's like early LED projectors in the aftermarket, the MLED uses a specially developed CSP chipset from Seoul SemiConductor. To top it all off, the "M" icon that's projected onto the ground thanks to the special foreground limiter is just plain cool.
Physically: It has a lot going for it too. The threaded mounting shaft can be removed from the projector to free up almost an inch of depth for those who don't need/want it. The integrated mag-lev fan is sunk into the heat sink, keeping space to a minimum without sacrificing the ability to stay cool. The wiring is clean, out of the way, and can be disconnected with ease. The precision and existence of mostly die-cast (rather than stamped) parts in the cutoff shield mechanism makes for a slop-free setup and conveys quality over cost savings. It could pass for an OEM part.
Simplicity: Forget about separate bulbs. Forget about big ballasts, or where to mount them. Forget about complex relay harnesses, and where to run them. Here, you've got the projector and a small external LED driver to regulate power and control it's low and high beam function. If you're a clutter phobe, or simply tight on space working on something like a motorcycle: the MLED is the way to go.