HIfi Rose 150b OR volumio rivo+DAC

Hello to all, I have Moonriver 404 ref, and klipsch Rf35 till now and looking for dac/streamer solution. Max budget about 3500 euro. I have found rose 150b used about that money. But I read many opinions that a standalone dac maybe is better. So volumio rivo is great streamer for 1000 euro so a dac for about 2500 will outperform rose 150b? . Dac thoughts lab 12 reference (no dsd unfortunately), m2tech young iv, gustard r26 or a26. Don’t know very confused. I want great bass, transparently, imaging etc

Till now I'm listening through Dap shanling m6 pro 21,from line out and I'm very happy. But I think a desktop solution will sound wayy better, hope so.... 

Thanks a lot in advance for your help