I would say to check out cables of say $200 or so.
Those who understand more about switch supplies have a ton more circuitry than a linear supply, it is possibly a big waste to use say a very expensive cable.
There's no right or wrong, there will be differences, but from my experience testing cords costing more than 2X the unit. I am very happy which a much cheaper cord. The expensive cords made a much better improvement in my dac which does not use a switching supply.
The Node 2 can sound very very good and musical without spending too much on cables.