Looking for recommendations


I have Revel F228Be speakers, NAD M22 amplifier on low frequencies and a YBA Integre DT amplifier on high frequencies. DAC is a Benchmark DAC2 HGC and the streamer is a Bluesound Node 2i. 

I am looking to upgrade the streamer OR sell the Node 2i and DAC2 and replace it with a combined streamer/DAC unit.
I currently use the DAC2 as a preamp.

I've been reading reviews and past discussions on the Lumin U1 Mini,  Aurender G1, also on the  NAD 658,  Teac NT 505,  Cambridge XLN V2,  and Lumin D2. Others for consideration?

My budget is $2,000 for streamer only or $3,000 for streamer/DAC.

Please help with your thoughts and recommendations on which way to go and why? Thanks!
128x128ericnicky
If you use your DAC you could look at the SHD Studio. It has Dirac as well. 
Yes, I just watched an excellent video by Hans Beekhuyzen on this product. Very compelling indeed and at an attractive price. However, I don't see a 12V power supply included or an option for purchase.
The NAIM nd5xs2 is slightly above the 3k level for a streamer/Dac and gets very highly rated. I have one of those in one system and a benchmark dac3hgc in another, and for the ease of use with an all in one and their app, I prefer the NAIM. 
Speedbump6, Thanks for the input. Is there a difference in SQ between the two set-ups or just convenience?