I'm watching with interest, I've never heard of RMS, but they look like a great option, and good reviews from the sound of it. I have a set of Amazon LED's that are decent so far but aren't exactly the look I want. I'm using them on my Motorhome with low/high 4x6's on outside then high beam only on inside for about 18 months, but that's only a couple thousand miles so it's hard to say about longevity. But the cutoff is good, they fit decent, and they are noticeably brighter than sealed beams. The low beams are low/high, and the high beams are still sealed beams and only kick on high, I've actually disconnected them and couldn't really tell a difference.
This wasn't what was asked, but I wanted to throw it out there...The higher temperature lamps (higher K rating) do appear brighter, but the way your eyes see light, they tend to make the overall night driving experience worse. Bluer light causes the pupil to shrink, which sharpens visual clarity and detail resolution at the expense of total light entering the eye. If you need to see a circuit board, or read fine print, 5000K/6000K+ will help with those fine details. Going with a lower temperature lamp lets your eyes soak up more light around you, rather than just what is under your headlight pattern. I'd much rather see the deer off to the side by the moonlight, or a kid walking by streetlight, than to read the bumper stickers on cars around me at night. 4000K is about the limit for me, and I'd rather have 3000k or even "yellow" headlights.
The reason Blue is associated with bright headlights is actually because in the early days of projector HID's, the high end OEM's used 3500-4000K lamps, but intentionally filtered out the blue light and discarded it off to the edges of the beam pattern, where it didn't matter. This kept the high quality white/light yellow night driving light directly in front, as intended. But if the headlights were aimed properly, drivers outside the vehicle only saw the blue light cast off to the side and it became easy to distinguish those nice foreign cars by the blue headlights (which were actually intended to be the opposite of blue). People started buying headlights in bluer colors to look more high end (and because there is a definite increase in how well you see what is under the light), consequently OEM's started putting more blue into their lights to keep up with the fashionable trends, and a vicious cycle starts. LED street lamps compound the problems, and now we use 4-5x the light to be able to see only marginally better overall than night driving in 1982 when everyone was running sealed beams.