A lot of info here if you do a search. So much in fact it overloaded me. Buy from here or there, China this or that, lums, brightness etc.....
I went to my RV guy with RV in his parking lot closed all drapes/curtains to get dark as possible and put the LED bulb he said was closet to what I had. Did a comparison side by side so to get same light as before.
Worked out good in every fashion except one important fact.
Those things are expensive!
So we replaced just a couple at a time, starting with the ones we use most.
Still have 2 do swap out. Very pleased with results. Can go a lot longer on battery when boondocking.