Reading the reviews of the brighter LED interior light replacements, one person had to re-install the tungsten bulbs because the LED's were too cold (blue) and gave his wife headaches. There were other complaints of them being too blue. I know I have some LED flashlights that seem plenty bright (they sure do a good job of ruining night vision for 10 minutes) but the bluish cast is goulish and makes it difficult to discern what you are looking at. The colors on maps don't "pop" anymore which makes them difficult to read. But the worst problem is how they ruin night vision for a substantial amount of time after use.
In the long winter darkness of the North, I think I would rather deal with the lower output of the warm feeling tungsten filaments (particularly when in really dark places away from city lights). But the electrical savings of LED's does appeal to me. I would switch if there was a warmer LED kit with a high CRI rating.