I bought this locally last November. Since then it has performed satisfactorily and the HDMI output gives high quality images (which is why I wanted it), but it is surprisingly clumsy - clunky - for a Sharp product. I have not had some of the problems described by others although occasionally it has frozen and re-booting is the only way to cure it.
First, although it can freeze live TV, unlike other machines, it does not "trail" 30 minutes as you watch. So although you can freeze if the phone rings and then continue, you cannot review anything you are watching as you watch it - eg a news item you want to review: a goal, golf shot or whatever. This is a real disappointment. The search software is useless and extremely slow. Various functions such as timer review (to see what is due to be recording) is similarly very slow to kick in and the EPG is slow and awkward. Intuitive recording is just not there and frequently it will repeat a recording which is annoying. The HDMI wide/standard setting is unreliable.
It is noisy and tends to randomly wake up in the night and spin the HD then go back to sleep.
Overall, a poor Sharp machine. I expected better from them. I think it is poor software which lets it down. At the price above it would be a good buy, but I paid double and I was a little disappointed. There are better devices out there.