A not-unrelated question is this:
Of the Dacs which meet your (a) price point, (b) possible sonic preferences, which are (c) available to try out in your present system? As many point out, it's very hard to make snap judgements about audio. It helps to live with something for a little while. If you had two Dacs which were both reasonable candidates, get them both into your home on trial and take some time listening to them. It's better than buying quickly, selling, buying again. Just a thought.
Of the Dacs which meet your (a) price point, (b) possible sonic preferences, which are (c) available to try out in your present system? As many point out, it's very hard to make snap judgements about audio. It helps to live with something for a little while. If you had two Dacs which were both reasonable candidates, get them both into your home on trial and take some time listening to them. It's better than buying quickly, selling, buying again. Just a thought.