I have tried a lot of different style led retrofits. Some, not so good. Some very good.
Have some installed now for almost a full dune season, and will be keeping this particular set up, as they seem to work the best for me.
24-5050 led panels in one side of my dual bulb fixture,and
48-5050 led panels in the other side. I like the 5050 led panels, instead of the older cheaper 3528 panel because 5050 have 3 leds in each led cluster, more lumen.
I use the bright white led, as I don't care for the soft yellow led. I've tried both. You might want to try both yourself and make the choice depending on how it looks to you after it is installed in your fixture with the diffuser cover on. Give them both a chance for a few nights to see what suits you best. Don't jump to any conclusion at first glance, use them, live with them for a while, and then decide.
The fixture cover/diffuser seems to diffuse any harsh light from the led panels for me. It took some trial by error to realize how usable the bright white is compared to the yellow soft white.
Many fellow campers notice the difference. At night, with leds on inside, my TH draws lots of attention. Have had many people come over to my TH and comment how it looks great from the outside when all lit up inside with the bright white led's. I agree, and the light inside is bright, very easy on the eyes imo.
Reason I use 2 different size led panels,,, it gives me the choice of how much light I need.
The switch in the middle of the fixture allows me to run 1 or both led panels, either the 24 or 48 led -5050 or both. Mostly I keep only the lower wattage 24-5050 in the on position, and use the wall switch to turn on and off the fixture.
But when having many guests in the TH,etc... or need maximum light, both get turned on.
With both led panels (24&48-5050) on, much more light than both stock 18 watt 1141 bulbs produced. And 2.2 watts is not even hardly a drain on the battery, compared to 2, 1141 bulbs @ 36 watts.
Approximately, on my meter, the 24-5050 panels use .8 watts, the 48-5050 use 1.4 watts. HUGE power savings compared to the 18 watts the 1141 bulbs use.
Ebay has many led light vendors that sell the panels. I've bought some that are not up to par with others, its a******shoot. The last vendor sold me 10, 24-5050 and 10, 48 5050 for under $50 shipped from China. They are bright and work great. They came with 3 different bulb adapters, all wrong. I needed the 1141/1156 base. So broke off the glass on the old bulbs I removed, and soldered the wires from one of the adapters on to the base. Works well, but took some time to do the soldering. The vendor I used last, seems to have dropped the led panels from their store..?
The 3m(?) adhesive tape on the back of the panels seem to hold up well for the 6-8 months I've used them. Time will tell if a tape upgrade is needed, but for now, the tape they came with has worked good. We'll see how a summer in PHX covered storage treats that Chinese 3m tape. I'm betting its probably close to 110* inside the TH even in covered storage, on a nice PHX summer day...
jmo