Thanks to all of you for your feedback an comments. Very helpful.
I sent Andrew (SGC) a couple emails over the weekend based on your comments and questions that I had.
At this point, I'm still torn between the ZEN and the i5 sonictransporter/ultra rendu bundle. I like having the convenience of using my chosen ripping software, dbpoweramp, on my Windows laptop connected to an SSD for the ripping part of this project. I only want to rip the 3,000 CDs once and want to make sure it's an accurate rip with all the artwork intact.
The ZEN requires that I free up space on my desk where my router is. Just a bit clunky IMO.
Also, the drives included with both products are marked up 2x. With the i5 I can purchase the exact same 4TB SSD at half price from Amazon. I'm kind of stuck with the HDD provided by Innuous when I'd prefer to use an SSD or Synology NAS for file storage and back-up. Hmmm . . .
I'm on the fence about Roon. Seems like it's not necessary for the ZEN. Not sure about the i5.
in short, I can start ripping CDs tomorrow if I choose the i5 path without buying a thing from SMC in the near term. Then I can transfer the files to the i5 once it arrives. If I go the ZEN route, I need to order the table top unit now and use a clunky ripping set up, overpriced HDDs, but a better file management app plus I'm not tied to Roon.
Just thinking out loud a bit more. Feel free to constructively criticize my thought process.