This is the one I bought in January 2013 (bought two of them a few days apart). They were £60 when I bought them and have been regularly since then. Terrible price now!
http://www.amazon.co.uk/gp/product/B...?ie=UTF8&psc=1
The Unblockus site does say that Unblockus may not work on models sold outside the US.
http://support.unblock-us.com/custom...rticles/291573
All I can say is that it works on both of mine. I did a firmware update when I first got them, but haven't done one since (If it ain't broke etc...).
You don't get the US apps (as expected) but as Netflix had launched in the UK by the time I bought the WD boxes, it was included as a UK app set anyway.
I bought them purely for Netflix use, to get 1080p and 5.1 audio and don't use them for playing back ripped DVDs; I have a couple of media PCs for that.
I leave them on all the time and have to reboot them every now and again or else Netflix can hang when playing a title. I don't have to reboot the bedroom one very often at all, but the one in the lounge has a couple of USB hard drives attached with ripped DVD video on and that seems to make a reboot required much more often for some reason. One little advertised feature of the WD box is that it acts as a cheap and cheerful NAS drive, which is why I have a couple of USB hard drives connected to the lounge one.
Also when you reboot, it sometimes forgets the video output setting and reverts to 720p/50. I'm used to that so always check after a reboot.
So the WD box is not perfect, but it works well enough for my needs. I like the ability to change the video output to my desired setting and therefore put up with it's quirks.
Hope that helps.
---------- Post added at 19:27 ---------- Previous post was at 19:01 ----------
I think 3D content is limited to the US Netflix region. Stand to be corrected on this.
---------- Post added at 19:32 ---------- Previous post was at 19:27 ----------
Just checked and the WWE Network isn't on the WDTV box.