Personally, I think a good headlamp is all that is needed. I've used a nitelite quite successfully for 20+ years. Of course, I've also used a tactical light on my shotgun for the last several years. It helps to light up the target just for the shot. I use the headlamp solely for locating and keeping track of the animal as he approaches.
A predator's eyes will glow like light bulbs from a loooong way off with the dimmest of red lights.