I went with M4 bulb conversion in my 2011 Tiffin. Plug-&-Play simplicity. You can find cheaper but not better than their Elite series. I ended up with 5 different style bases to replace everything from the overhead lights to closet lights. Also bought a 20-ft LED strip light set to trim my awning.
Many of the M4 Elite bulbs are offered in 3-color temperatures; 5500K I used in main living area is quite "blue-white", the 4500K Natural Light I used in the bath and bedroom areas. I did not try the Warm color temp.
You can get a 10% discount if you buy 10 or more of any one bulb size.
M4products.com