What's a really great Streamer/DAC box for just streaming Tidal?

Used or close out of Auralic Altair . You can still find them (first generation) new for around 1600 or 1700 bucks. Less used. 

Of course Dave carries the LUMIN, why would he recommend it if he didn’t. The Lumin is decent, but I thought the Auralic Aries was better. But, you don’t need a streamer. Most streamers require you to use USB which is flawed and you can spend many $$$$ trying to make usb sound better.
if you have a pc or preferable linux or a Mac computer, buy Roon to run on that. Then get a top quality dac like a used ps audio DS jr or DS sr that has a network interface. Roon is by far the best interface/server for local and streaming Tidal and others, and the ps audio dacs are rated A+ by the trade rags if you read them. BTW, tomorrow we get a free firmware upgrade for the DS dacs that improve SQ. 
Keep it simple!

I have a Cambridge Audio CXN 2. The sound is great but the Cambridge Audio App which you need if you are to use a smart phone as a remote is crap. Tidal's App is not great but much better than  that from Cambridge ( made in China not the UK).

Thanks for the suggestions, even the dealers! I never understood why people think their input isn't valid. They carry the products because they sell and they sell because they are good and customers are happy with them, right? At least that's what happens with the dealers I know. I may try to grab an Aurelic or Lumin on the used market to minimize risk.

If you can stretch your budget a bit more I'd like to suggest a combination of: Bluesound Node 2i streamer ($500) + Chord Qutest DAC ($1,895). Caveat: you'll have 2 separate boxes but the bright side is that they're both quite small so minimal footprint. The Bluesound BluOS app is quite snappy and easy to navigate and the Chord Qutest is the bees knees. I think you would have to spend a whole lot more to best the performance of this combination however admittedly aesthetically speaking its not the best. Also, I realize the price of the combination is close to $2500 which can get you a  one-box solution as the Auralic Altair G1 but I doubt that its internal DAC will sound better than the Qutest (granted I have not heard the Altair G1 but have read glowing reviews). 

If your budget is fixed at $1500 I have a friend that is very happy with the Cambridge Audio CXN 2 but I haven't personally heard it yet (though I trust his ears) and as mentioned above the app leaves much to be desired.