Well, I think the one that's a little more detailed works better and is more "roboty" and has more charm/character etc. The other minimal versions are nice too

Well, I think the one that's a little more detailed works better and is more "roboty" and has more charm/character etc. The other minimal versions are nice too -- perhaps you could use a less detailed version for small 16px icon sizes etc. i.e no bolts. But, hey as long as its one of them! And congrats on your bold move & initial success :)