I've been struggling with replacing the 10 W halogens in our puck lights trying to find the right combination of brightness and color.
The biggest problem I had is that the small round LED's that will fit in the puck are only about 1/2 the brightness of the halogen bulb. Granted they are cheap but I couldn't accept the loss of brightness.
Fortunately, on this coach, the PO had replaced many with a 10 LED unit that are not too yellow and not too white. While these are OK in the living room and dining room. Not so good in the bathroom and bedroom.
I finally found these that work perfect in areas where a brighter, whiter light is beneficial.
Elite Not cheap but at 210 lumens vs 190 for Halogen and 90 or so for the typical led light, are great. The Bathroom, toilet room, and bedroom lighting is much improved. Because there is no line-of-sight between the living area and the bathroom you can not see the color difference until you actually enter the room. I still have the indirect rope lighting in the ceiling if low light is desired.
I'm also using them under the counters and above the coach/recliner where the brighter light is a boon for reading or working.
In reality, so much depends on the type of lights that you have. Some are much easier to convert than others. I think pucks are the hardest due to lack of space.
Still have not figured out the Chandelier which as a bunch of globe 120 V lights but the rest is falling into place.