Thanks to all who have responded. Just to let everyone know, I did purchase the Iris DDC a couple weeks ago. It has made an improvement in the sonics I am getting from my living room system. Well worth the price paid (~$500) within the context of the system.
I am running from my apple laptop USB to the Iris, then coax to the DAC input of my Music fidelity M3 SCD player which I consider a DAC/transport. It also serves my TV when watching movies via optical to DAC though I haven't run that through the Iris yet. Will give that a try soon.
I live in the country an receive Internet service via Wi-Fi. I am to be supplied with service via fiber optic in the near future. That will change my position on the use of streaming as a source. Will likely purchase a dedicated streamer at that time.