I haven't opted for any doors on mine yet. My collection room is closed off except when I'm in there or we have people over and they want to see the "museum"
, so dust isn't a big issue in there. I'm thinking of some track lighting or other cheap options. I know a lot of people love the dioder lights, but I'm not sold on them yet, especially at $50 a set (I'd need at least 4 sets).
BTW, I also have added an Expedit unit in the middle of my collection room. They are PERFECT for smaller busts/dios, and 12" figures. But they do present yet another lighting challenge.