Cool work!
Indeed, I like the 2nd logo. However, they are on a flat coin and not tilted which was my main gripe. The web2.0 for the logo and then the logo put onto a coin works for me, the branding is the same and the shape makes the logo recognizable. There is no logo for LOT like in the above examples, the coin IS the logo which is maybe where its lacking. The 2nd quark logo above stands in its own right, without it been put onto a coin. It can be reproduced in every color and its still recognizable as that coins logo. LOT doesn't have that yet.