I'm stuck between 1 and 2 myself as my picks on this

2!

I'd say 2 ;)

I like how this looks.

I'd say 4 with a caveat, They look like they're against the law at the moment, and are cornered by some form of law-enforcement. In which case having 2 light sources on each side of them makes sense if they're surrounded, maybe looking looking up at some flying vehicle. Assuming this is all sci-fi.

If this is fantasy, I'd say 5. Low torch-light, some kind of dungeon? Like they're getting ready to sneak attack a few guards and make away with riches.

Crap. I meant 6 for fantasy.

5!

2,6 best