Would be worth every penny, but there are cheaper options, especially DIY.I am using the unbalanced 3.5mm. I briefly considered getting a balanced cable but baulked at what seems a $70 or so ridiculous price.
Turns the headphone amp side of the 5K into a completely different beast, like adding the Periodic Nickel - which would cost you $300 and be a (small but annoying for portable) added trinket on the chain.