I highly recommend these bulbs for the interior lights. (Note: these are 921 replacements. If you currently have something else, they won't work for you.)
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1
We just replaced all of our bulbs in our Cherokee Grey Wolf 17BH with these. They were significantly cheaper than others I had used in the past, and the color and brightness matched the old bulbs almost exactly. I just made the change, so I can't comment on the long-term durability at this point.