sometimes,I asked about how to choice VJ projectors. so,try to tell the best VJ projector. for my experience,most import point is brightness. the unit of Projector's brightness is "lumen". for example, for a small ,or a middle club use,I recommend 2000 to 3000lumen. under 2000lumen is a bit dark. but over 3000lumen,maybe it is too glare. for a large club,or a LIVE house,I recommend 4000-8000lumen.