Optical digital cables?

The Blue Jeans toslink, which is Mitsubishi ESKA, is just like all the other low cost mono-filament toslink cables.  It's basically a single plastic element that transfers the light.  These plastic mono-filament will sound dull and low-resolution compared to the better glass fiber cables.

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The Lifatec is the best bundled glass fiber cable for the money.  If you're on a budget, buy the Lifatec.  It performs much better than Blue Jean or the other mono-filament. 

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Other alternatives are the Wire World Supernova 7.  Or, if you want to get really expensive, the Audioquest Diamond.  They are all just bundled glass/silica fibers, so I don't expect much difference between them.  Lifatec will cut and terminate each cable to your order (you can order custom lengths).  Wire World is a manufactured cable that comes in set lengths.

Thanks everyone,

I'm going to go with the Lifatec. I don't expect any sharp bends outside of the back of the KEFs to the back of the Node 2. I think I'll be fine with 20" but will go 24" for a cushion.

Good choice. I have both the Lifatec and the Blue Jeans cables. Not only does the Lifatec sound better but it will also pass a 24/192 signal, unlike the Blue Jeans which tops out at 24/96. 

I might be overthinking the length I need for the Lifatec. I can get by with 20" but was going to get 24" for a small cushion. Now I’m thinking what if I move things around later, should I get 36"? Any disadvantages in lengths this short? It’s only $10 more to go from 20" to 36" and I’ll have more flexibility placement wise down the road if I change things up.

No, there isn't any real difference between 2 feet and 3 feet for optical cable.  The disadvantages for short cable length come into play when we are dealing with digital COAX or USB/HDMI type cables, where the minimum length should always be 5-6 feet.