I will be voting for # 9 by campycoin. Worldtreasurefinders made a very good case for this design and I tend to agree with him. I enjoy the designs simplicity & lack of fluff. Often, the most exquisite things in life are are ruined by adding complexity. This design makes the link to luxury by association of gold bars and also would be unique to your company (uniqueness seemed to be an important criteria to the contest). I don't think any of your competitors have done something like this. With the simplicity, you shouldn't have any issues getting it minted either. Also... on a nerdy note it makes me think of bars of latinum from Star Trek. The real "precious" part is the latinum(bitcoin in our case;P) located inside of the bar. That's just me being goofy though!
Like many others, I really enjoyed Mr. Bau's design and it was tough not to pick it. I liked his concept of the bitcoin symbol being created out of multiple gears working together to maintain the network (all pieces working together for a common goal). At least that's how I interpretated it. I thought it flowed together quite well. Ultimately, I was worried about the design losing too much detail in the minting process and so opted for campy's less is more theme. I also saw more of a connection to luxury with campy's design.
If I may, I'd like to make a few suggestions to Coinographic if they intend to do more design competitions as I see a lot of drama here. I would completely take voting out of the equation. I think it's great getting the community involved with your design, but you don't really need voting to do that. Secondly, when you're deciding on the top five designs, really take your time to pick them. At least sleep on it, having fresh eyes is always helpful. I don't think a scale from 1 - 10 is a good enough evaluation either. Write down specifically what you do or don't like about the concepts. If you don't already, have a designer help you with this process. Once you have your top 5, post the reasons for choosing the winners. If people understand why you made your choices, they'll be less likely to think you just picked at random. You can then ask the community for feedback on the top 5 designs, but your company ultimately chooses the final design. This way you'll avoid all this, "I vote for #so&so", without any relevant feedback as to why they feel that way. I imagine you'd prefer quality, not quantity.
Lastly, I'd like to thank Coinographic for putting on this competition despite the hiccups. I had a lot of fun participating. Thanks!