Great initial review, Jamie! It would be great if you could post a follow-up in about a month to see how the humidity and cup holder is working out.

I'm also looking at this rack, and I was would probably get the same tubs (sans cupholder). I'm not sure what the benefit is to having a completely dark tub. Maybe they don't require a hide, but it seems like it would be difficult to monitor them without opening each one up and you wouldn't be able to cycle the lighting during breeding season.

I think I'm the one that asked Adam about these way back when, so I'm curious about the ventilation. I think the FB or KK would be better in a room that has the humidity controlled, but I think most non-herp rooms don't have that luxury so hopefully this solution will be better at keeping the humidity up yet still allow enough air in.