Susan and I collect Little Light of Mine, of the lighthouses we have seen. We also have bought a few Limited Editions that we really like. We figured early on that space was a limitation. In addition, I like to donate to lighthouses that need restoration, so I try to keep a balance between the two.
As far at the burnout, maybe you just need to take a break and not buy any for awhile. It would be sad to sell most of your collect at mostly reduced prices and wish you had them back in a year or two.