My vote is for the voodoo. I picked one up two months ago, I really like it. The ability to use V brakes on it is great, and the frame seemed really light and strong. I love the sloping top tube, though it looks a little funny I really like the extra clearance. The dropouts are pretty good too, mine slip a bit so my chain isn't really tight but it doesn't affect the performance. I bet there isn't a big quality difference between the four frames you listed, they're all pretty awesome. I have a hard time seeing how a niner or salsa frame are much better than the dambala or bandersnatch.
The first time out on real trails with my dambala I caught my pedals on stuff a lot, which is funny, as I thought the dambala had a high bb. I've gotten used to it now, good thing I have a AM BB on it.
Here's a photo of my dambala.
https://flic.kr/p/2612690891
Lots of people really like the bandersnatchs, you wouldn't go wrong getting one of them!
Edit: oh yeah, the origin 8 frame was also on my short list for bikes, it looks really decent. If their steel fork took v brakes, I would have gone for it.