I thank all for the input.
My primary system is a modest high end system playing CDs via Jay's transport into Audio Mirror DAC. I have explored the purchase of a streamer (say $4K) for this system however prefer the CD avenue at the moment. I have visited the many AG threads toward that possibility, not having to introduce another.
Streaming is primarily used in my secondary and tertiary systems via Qobuz. Most times I use streaming for background music. I would use the USB interface most often out of the DDC. Hence my question was focused on the Iris for computer streaming.
The feedback I have received so far supports that the Iris would make an improvement and to me be worth the dollars spent. I will likely purchase one.
I will keep all posted as to my progress. Thanks again!