I went for this because the DTV200 model had such good reviews and the 1 review for this was a good one. I'm glad I did! as the previous reviewer said, the supplied aeriel is as good as useless however, attach a decent aeriel and the signal is great. It picks up all freeview stations in my area, the picture is fantastic with no artefacting or jitter and would go as far as to say the picture is considerably better than my HDMI upscaling freeview box.
The device does a good job of recording and time-shifting too, again with no jitter or artefacts and that's using an Intel Atom based PC.
I have used several considerably more expensive TV tuners in the past and none has come close to this wee device - and as a bonus, there's a DAB radio tuner built in as well. It works seamlessly with Windows 7 media player too. For this price, you can't go wrong! - I may even buy another so that I can record 2 channels at once.
I cannot recommend this enough. I rarely review products as I'm not the easiest to impress, this little gadget really did surprise me though!