I'd avoid DSLRs. Our photographers hate shooting with them. The quality is fantastic, but with even the minimum kit of clap trap to shoot video, they are BIG. And they require huge tripods, as well. The super-shallow (by video standards) depth of field looks great. Very film-like. But it's really hard to control. And yeah, depending on the model, they do tend to overheat on long takes. Now video cameras that are good in low light cost a fortune. So I have no useful advice at all really.