Thanks all. Good advice, and very helpful. One of the things I enjoy most about the PS community. There is definitely going to be steep learning curve for me.
But just as an initial question what more do you get from an U1 or G2 that arguably justifies the price difference over a Nucleus or something of that nature or even a lower cost streamer such as Pro-Ject, Cambridge or Mind. Is it simply the guts of the unit (less jitter/noise), the software that allows you to save $$ on a Roon subscription (assuming you are not lifetime), multiple output options? Doesn’t seem to be upsampling capabilities as you could get those through Roon and/or the DSD.