Streamer Recommendations

A word of advice. In order of criticality - speakers, amp, dac and streamer. 
 

As to a $2000 streamer - older model Lumin U1 may be? Aurender N150, Auralic Aries G1? 

For that system I would suggest getting an all in one. Something like one of the hifi rosebunits used or eversolo for example. Start there on a used market. Upgrade when you are ready.

@rsf507 there are too many variables to come to this conclusion. You can see my responses in that thread. So I wouldn’t run to dump dedicated streamers in favor of the inbuilt network renderer in DACs. Quick A/B, not being able to hear the difference, using Roon as a source I wouldn’t be able to tell the difference either.
Room sound quality is inferior to most native apps n higher end streamers including Lumin. It’s just that the Lumin app is so user unfriendly that you would opt for Roon simply for the sake of not being aggravated. But let’s not pop the cork yet. Careful listening proves a dedicated streamer is almost always a better option at least to my ears.

To add, Roon is absolutely amazing to use as it has the best UI available today. But I can’t say the same for its sound quality. Do Roon right with Grimm, Merging, etc and you’ll be in better shape but now we’re taking $15,000 - $30,000.