I have the Bluesound Node, the Cambridge Audio CXU (a universal disc player with Wolfson DAC chips), and an Ares II.
I haven’t done the research to compare the DAC of the CXN and the CXU. The DAC of the Node is comparable in SQ to that of my CXU. I think the Ares II may be a little better, but it’s not a huge upgrade IMO. It does however let me see what the incoming bit rate and sampling rate are of the files I’m streaming, and I like that. It also allows more flexibility in managing the processing, since you can choose between oversampling/non-oversampling modes and two different digital filter choices, and this is worthwhile. After getting the Node and Ares II I upgraded my cables from preamp to power amps and speaker cables, and with the increased transparency I might be able to detect more of a difference between the Node’s DAC and the Ares II. But I don’t plan to spend more time making such comparisons.
You might want to consider if your amplification and speakers deserve an upgrade more than the streamer (but I don’t know what you have there), even if $1200 won’t get you much of an upgrade. But perhaps it’s worth saving up more to upgrade them than upgrading your streamer?