This is my take at chain links that draws inspiration from both Billrobland's and JabHook's chain link designs.
I like the more rounded shape of the links in Billrobland's design and the side connection feature that JabHook implemented. This design combines both of those features into a rounded chain link with side connection.
I've uploaded both a long and short link version. The short link version is similar size to both Billrobland's & JabHook's designs.
You can check out their designs here: