Saw this review here, and thought my experience might help:
A month ago i made a new HTPC based on the upgraded FC5 Evo. This is pretty much same chassis, with a few changes: Less but more effectice heatpipes, better and more universal mounting for optical drive, USB(3) at the side of chassis, and a slightly improved finish on the front.
Other components was:
i3 3225 (the least powerconsuming CPU with HD4000GPU)
KVR16N11K2/16 that showed up not to fit this MB (but works perfectly in a P8H77-I, but the ITX-MB does not fit the FC5....) in dual, but as 2 single.. Grmph.
ST-OB2 optical drive
Nano 150 PSU
HyperX 3K SSD
USB 3 internal cable
HP MCE USB IR-receiver and Harmony Touch.
Windows 8 Pro and XBMC 12.0 Frodo. Media is mainly streamed or stored at a separate server. Connected to a Toshiba 47" LCD via Yamaha RX-V 667 receiver, HDMI all way.
Mounting was relatively straight forward. A little fiddling with the cooling solution, the screws springs loosened some tiny flakes of aluminum that possible could short circuit the MB. Easy to vacuum, still something that should not happened. Its a bit thight here and there, so i.e. angled SATA-cables is a must. The optical drive use micro-SATA connector, a combined plug for both power and signal. This slimline connector did not follow the optical drive.
Screws for mounting optical drive is easy to screw too deep into the drives chassis, preventing the mecanism to move. Some delicate job there, with some glue, was my solution. It could be prevented by better design on the screws.
The result is sweet! WAF is 98%
The MB/OS/GPU is a nice combo: Very little (if any) hickups, even with several ON/OFF-cycles of receiver and TV, resolution (1080P) is maintained, sound is maintained. Both this was very annoying with my old setup (AMD 790GX with ATI HD3300 GPU). Both sound and picture has improved _alot_. The HP IR-receiver is a bulky box, but it has a tiny waterdrop-shaped extra IR-eye, as I use as the only visible "thing" except for the chassis itself.
So: It does the job very nice, both regarding design, sound and picture. It's pricey yes, but if you're into a "sexy" well-working HTPC, its definately worth it.
I might want to add a FM/DAB-radio, but have not found a nice solution there yet.