I'm strictly a stills man, myself but I can see the attraction of video for this sort of subject. I'm still after a really good, sharp shot of one with a coiled proboscis.
I've started growing Eupatorium Cannabinium in the garden, which is even more of a butterfly/moth magnet than Buddleia (with the major advantage that it's native rather than a foreign invasive species!). It seems not only to attract the creatures but to send them into a stupor after they have fed on it (bit like me after Sunday lunch) thus making them slow moving, dozy, apt to settle for a rest and thus much easier to snap!
@Paulos_the_fog Great shots. Yes, I've several times seen them resting (at night, like most people) but never got a good shot of them in action. Video is so much easier!