RMS does seem to have good quality, and plenty of folks have been happy with them. And yes, the better LED's are getting much better about placing the LED element in the right place. Essentially the LED has to be the exact size and shape of an incandecent wire element to get the proper pattern. Newer ones are a lot better than old ones, and honestly probably good enough for an older style glass lens like RMS has. Newer headlight housings (like the ~04 Cat Eye in particular, and fog lights in general) don't have much to catch the scatter and keep it from blinding people. HID's have an arc rather than a filament, which is literally in the shape of an arc and impossible to properly reflect and need to go through a projector style lens. Again, certain newer reflectors are worse than others, and glass housings are probably the most forgiving. They also have the worst cutoff pattern to begin with, so just getting the extra light through it helps, and the glare from the multifaceted front glass is much less of an issue for oncoming traffic, all things considered.
I should note, I'm not against LED's at all, my night vision isn't great so I added them to my motorhome and plan to add them to my Suburban when I have a few extra dollars for it, I've also switched over my DD Yukon Denali with factory projectors and am happy with that, although it isn't as good as an LED specific projector. But I do absolutely hate when LED's and HID's are misapplied and blind people...
Fun story from the lighting industry in the last 30 years, the modern trend of blue headlights was started because high end engineers, mostly German and Japanese, were working to take the blue light out of the headlight pattern to help drivers. Incandescent bulbs make full spectrum light, especially when given full voltage, but the blue was determined to do more harm than good. So they developed projector housings that would break the light into components, and they "threw the blue away" by refracting it to the edges of the beam pattern and left the yellow in the center where it helped. When looking at the car driving by, another driver or pedestrian won't see the yellow (since it is aimed at the road and specifically NOT at someone's eyes), they only see the blue that was tossed aside. That created an association of "blue" headlights and fancy cars, which was fed by the aftermarket with the HID conversion bulbs, blue tint over incandescents, and other technically bad ideas. That actually forced the high end OEM's to start making their headlights more blue based on marketing vs actual engineering.
