At my work there are 100's of Kodak projectors floating about. In one of our venues, we still have a few clients using slides, and currently I'm relying on an Elmo carousel projector (with a Kodak lens) - it's been in constant service for 20 years and hasn't failed. The Kodaks have not been as awesome as I would like - although the old solid metal ones (SAV2000, etc) are great (but don't have an automatic shutter/dowser like modern ones do, and are thus annoying in a venue context).