I have these plugged in to the back of my Panasonic TV as the HDMI sockets are very close to the frame and I didn't want to stress the cable with a tight bend. These small adapters really do the job and with no discernible loss of picture quality from any of the sources.
Although very much cheaper than the MK version, this case only lasted about three months before it started falling apart. Only if you're looking for a cheap short term solution that looks nice for a short while does this case make sense.
I love these note pads, I like the hardback version better for writing in, but these have a nice feel to them. They bend a bit when being carried in your bag, so you don't get those unforgiving corners digging into the fabric like you do with the hardback version.