I just meant generally in relation to "why would people go back to incandescent lamps".1. I'm guessing you mean quality control issues w/ the LED and matching a given LED lamp w/ various headlight reflectors?
2. Guaranteed. Heck, your eyeglass frames went bye bye the day before you broke the ones you love. Your refrigerator's circulating fan or temp control (a pc board) went obsolete the week before your frige stopped working....etc.
3. True, but my tired old eyes seem to see better with Cindy's (Evitek) LED's.
I confess to being a fan of Evitek's leds. I've bought at least half a dozen pairs from them. You can email Cindy directly: Cindy Zhou - cindy@evitekhid.com Bottom line for me is I think I can see better with these LEDs than halogen. YEMV. (your eyes might vary)
The Evitek ones are highly reviewed for the ST1300 and they're probably great for it. I'm pinning this for when I need headlight bulbs in the future because that's a route I'll gladly explore.
At the same time, how many people tried another brand first, maybe two, and had worse experiences than the predictable nature of an incandescent/halogen bulb? They're going to stay with what they know works, driven by experience of what didn't.
It's not a condemnation of Cindy's LEDs or your opinion (again, the fact that you're speaking highly of them definitely suggests they work great with the ST1300 reflector design). It's just the realization that for countless people, they're never going to bother again.