I have no idea how to bi-wire those speakers, but my m60s I just bought 2 weeks ago came with the bridging plates already in place. Connection was as simple as any other speaker, and the binding posts seem of high quality.
Regarding speaker wire, I found a funny and informative article at roger-russell.com that states copper wire is copper wire. Expensive speaker wires are a marketing ploy to part us fools from our money. An electrician friend agreed, though the idea had never occurred to him before.
Might as well save some dough.
