Favorite design is number 16 by Mr Bau!
Most of the coins are really good, don't really understand campycoin's design though, looks more like an app icon than a physical coin.
I see it more like a thick, 2-ounce gold bar, kinda like this:

Very substantial piece of gold in your hands, with the hologram on the back.
Thanks! That is exactly what we were going for. It had to be .9999 Solid Gold so we knew we could not have color and "white gold" contrasting with yellow gold. I wanted it to be different... I see coins all over the place and they are very nice but for something that was only going to be limited to 100, I wanted it to be simple but clearly show it's value. Appreciate your kind words... If I knew they were going to want a round coin, I certainly wouldn't have gone so far outside the box.
Here's why I think design 9 needs to win. Today most people think of coins the same way they think of government fiat, as in the only reason the coin is valuable is because the government says so. We all know the whole purpose of bitcoin was to get away from government fiat money. When it comes to physical bitcoins and other cryptos, minting them with gold and silver ties them to precious metals as a sort of "digital bullion". With a precious metal coin, the link is made between the two. Even with this though, still many people think of coins as just another form of government money. Campycoin's design takes the next step, because it's solid gold bullion, not as much a coin. Think about how cool it would be to hold two ounces of solid gold bullion in your hand, coupled with the 5 BTC in the gold as well, and this would be the highest form of physical and digital bullion ever coupled together.