Sound quality was good and it looks nice. Being able to play on-demand shows (mostly from BBC stations) is very nice, and the radio can also play from internet streams and podcasts. However, you have to find and set these up through the Reciva website.
However, startup time was slow (around one minute from switching on to finding stations and playing music). This may be common to all internet radios (I haven't tried any others), but is not common to FM/DAB radios.
Also, it doesn't display the track artist and title, which is very common with DAB. From reading the Reciva website it appears that many internet stations don't include this information but even with those that do (eg. Virgin Classic Rock), the Tangent doesn't show it. I don't know why all internet stations don't include this info anyway - I'm sure it's not technically difficult and would be a big selling point, especially as many internet stations don't have DJs.
One possible reason why the Tangent doesn't show this information, even if it is provided by the station, may be because it only has a two line text display. This isn't really sufficient and would make it difficult to show Artist, Title, Station and bit rate (although the last of these isn't so important and could be lost).
Finally, there are a couple of features that are mentioned in the manual that I couldn't get to work. When playing an on-demand show you are supposed to be able to press "3" and move to a different time in the show (by typing in a time or ffwd/rew). However, I found this just switches the radio to preset 3, as it does when you're not playing an on-demand show.
Overall it is quite nice and I do believe that internet radio is the future. I just don't quite think it's the present yet. If I were to do it again, I would buy a cheap DAB radio for now, then get an internet radio in a year or two when the technology has matured.