I have one of these and a Zinwell as well. I puchased it about a year ago when my DSE box died and I was waiting for it to be replaced under Consumer Guarantee Act (by the Zinwell). Just my opinion, BUT It is physically larger. It isn't as aesthetically pleasing (looks ugly). I don't think it is as user friendly. I don't like the screen menu display and navigation. While I was using it with the TV (older Panasonic 32) via HDMI I didn't feel the picture quality was as good as the Zinwell.
I am currently using it with an Analogue TV card in an old PC (SVHS input and no HD picture) and now every time I do an auto scan for channels it finishes the scan then freezes and has to be turned off and back on again to continue watching. I haven't tried unplugging the mains yet (difficult to reach the plug) for a cold start. I may have to consider returning it to the supplier for replacement (Consumer Guarantee Act again).
I think it's time I got a TV with Freeview built-in as I just don't think the external tuners are as reliable as the built-in ones and they seem to become unreliable as they age. Also fewer cables to contend with when tuner is built in. However the Zinwell is performing to my satisfaction at the moment. The HDT is OK apart from the freezing problem.