Whats a good all around digital cable for under $250. I only need half a meter.

Purist Audio Design, the Genesis Luminist SPDIF has fantastic detail, great frequency balance, very transparent, with a generous soundstage.  Purist rules!  :-) 

Creative Cable Green Hornet...I have one and also have a Nordost Valhalla...although the Valhalla is more extended and airy with a snappier mid, the Green Hornet is just as smooth (in my rig) and I actually prefer it on my Sonos.

if you need Toslink: Audioquest Vodka. It's even closer to the Valhalla for frequency extension, but lacks the overall refinement. 

I have a Audioquest vodka  HDMI. nice

If Toslink then Lifatec. 

For optical I'm fond of Lifatec glass (which passes 24/192 flawlessly) and for wire I like the Black Cat Silverstar 75.