NMediaPC 200BANewegg Link (for reviews and specs)
This is the (discontinued but still available elsewhere) HTPC case I have and while it took a bit to actually put the system together, I've had no problems with the case itself. I have to put my ear near the case in order to hear the fans running and even then, I can't tell if it's the CPU, Power Supply, Graphics Card, or the case fans I'm hearing and I certainly cannot hear it over the sound of watching TV or listening to music.
The display is not programmable, so that's a con.
Edit for HTPC specs:
Intel Core2Duo E6600
1 Gig DDR2-533 RAM (1 bad stick from 4x512 Meg set)
Sapphire ATI HD 2600 Pro
AverMedia AverTV PCI-E Combo TV Tuner
160 GB SATA-II OS Drive
750 GB SATA-II Media Drive
Lite-On SATA DVD-RW Drive
Antec SmartPower II 450 Watt PSU
Windows XP MCE w/Remote
Olevia 232T 1366x768 HDTV
BenQ MP610 1280x768 Projector