don't even think about getting a set of Interior Xenon Bulb Kit.
They are really poorly made and the glass breaks damn easy.
Also you need to change bulbs once in 6months period.
Definitely go with LED bulbs which I am using them right now and don't have any problem at all!!
You get get them from Pacific mall but I suggest you to get a whole set from the states. (search on e46fanatics.com) lots of sponsors are selling them as a set.
Also most of sets from the states are resistor built in ver... well mine doesn't but never had a problem either.