I have changed out all of the lights with the exception of the 6 or so main lights in the living area. I always hated how hot the lights in the slides would get when you would be reading or working on the computer, so they were the first to go. It makes a HUGE difference, as the LED's don't give off heat.
I was confused by all of the different LED styles and prices. I decided if I was going to do the change, I was going to bite the bullet and pay for a premium, well constructed, replacement.
Here is the one I chose, and I am very glad I did:
Marinebeam G4 12V 24V Marine LED bulb
Next, the remaining overhead lights are going!