I used to have a Pure digital radio, which I had mounted on the windscreen. I felt like it was an obvious temptation to leave it there when it was parked, so used to take the unit with me most of the time. Over time, the connections wore out from taking the wires out and putting them in repeatedly.
The Clarity is quite a bit smaller than the Pure, so I was able to hide it away where you can't really see it. This is fine for me, since I only really use it for one station. The cables are long enough that you can hide the unit away almost anywhere without running out.
If you are planning to use it for lots of stations, I'd say that the controls aren't quite as good as the Pure. It doesn't seem to have the scrolling text (unless I'm missing something) which tells you the song info.
I would say that the signal you get is pretty comparible to the Pure.