Be careful with going to silver cables - they may change the sound to the bright side. Before you buy, ask Drew (at Moon Audio) his opinion. IMO the silver will brighten-up the sound, if it's too bright for your taste that's not easy to change back...
When I bought my SE846 (from a fellow Head-Fi'er) they came with a Forza Claire Hybrid cable. It is quite nice. I never heard the SE846 with the stock cables, as the Forza were already attached, but I suspect the Forza are quite a neutral cable - at least that's how the SE846 sound to me.
Good luck,
RCBinTN