I wanted to add my experience as well as a friendly "beware"....
I purchased two of these boxes to experiment with, but unfortunately it didn't fill my expectations. My comments below are compared to my experience with a Asus Chromebox M004U. Also, I am using all defaults (i.e. Confuence skin, etc...)
On unboxing I removed the ATSC card and inserted the 'blank' as I am using it as a client only. Also, this box is a lot bigger than I anticipated. For some reason I thought it was a 'Pi' sized box. All the specs are in cm and I never bothered to do a conversion to see how big it was in inches, so that's on me.
I also hooked up my Microsoft IR receiver as I wanted to use my Microsoft remote. Network was hard wired to a gigabit switch (although this box is only 10/100.)
The boot was quick and it has a snazzy new logo. I installed the latest version of Openelec (via the UI, not manuallly.) I then configured most of the settings, resolution, audio, etc. One thing I noticed right away was the menus were sluggish. When I scroll through lists I expect the cursor to keep up with my clicks and unfortunately it was lagging (this was via a keyboard, not the remote.)
I then configured the live tv (Mediaportal add-on) and copied over my Samba, custom remote mapping and advanced config files for my movie/tv series database then rebooted. Again, the boot time was quick. I then started playing around with live tv and movies. All content played great, h264, VC1, Mpeg2 videos. Content ranged from 1080p blurays to 720p live tv, all seem to play fine with no stutter/skipping.
The downfall was the menu animations. I expect a smooth experience all around. It is very annoying to scroll through menus that lag behind and have a lot of jitter. The menu jitter is very annoying when watching a move or live tv. I do not use refresh rate change, so my refresh rate stays at 60hz at all times. Unfortunately this box doesn't seem to have enough horsepower to keep up with the animations.
The only other negative is it does not have HD audio. I read a few posts on this before I purchased so I wasn't surprised that the HD audio settings were not available.
Bottom line is are the menu animations & HD Audio important to you? To me animations are part of the entire experience so it is critical that it be smooth. I talk to people all the time about my setup and most ask for recommendations, which is the biggest reason I tried this box. I am always looking for a cheap alternative to Chromebox, ZBox or NUC's to recommend. Unfortunately I haven't found one yet that compares...