Here's a picture of my latest build using the Streacom FC5 Alpha case (with no optical slot). Holy crap was the case expensive, but even with the spindle drive running, the only way I can hear it is if I get within about two feet of the case. So for me it was worth it.
Streacom FC5 Alpha case with FLIRC remote sensor
Streacom Silent 240W power supply
ASRock Fatal1ty Z270 Gaming-ITX/ac motherboard
Kaby Lake Core i3-7100T (this is the 35W one)
Crucial Ballistix Sport LT 8GB Kit (4GBx2) DDR4 2400
SK Hynix 120 GB SSD
Western Digital Red 8TB HD
Kodi and NextPVR for Media Center/PVR functionality (running on Windows 10 64bit)
The build is 4K 60Hz ready (I don't have a 4K TV yet though) and runs at about the same temperature as my current fan cooled, 4 year old i3 build in a Silverstone case.