To add to that, my advice is to look for LED lights where the AC-to-DC conversion is done by a power brick separate from the lights. Not only does that mean you can replace them separately, but generally these will be much more robust as the power electronics won't be as constrained by size.

I wish it caught on to have LED lights powered by a barrel jack DC plug like you have for most electronics. It would be a huge win for longevity. Sure it's not backwards compatible with fixtures designed for light bulbs, but the cases we're discussing here are complete light fixture replacements anyways... The fixture could have a barrel plug that you connect to an inexpensive commodity DC power brick which you then hide away in the ceiling.