I've got a Kenwood DAB unit connected through my HU and a glass mounted aerial on the top of the windscreen. Reception is great. Saves having to worry about fitting a new FM/DAB aerial
Also got a DAB Pure Highway unit in the X-Trail, again connected to a glass mounted aerial on the windscreen and also works fine. The Highway works via a built-in FM transmitter, but the sound quality is fine for in the car and is also removable so you can take it from car to car and listen on foot as well via headphones. About 60 quid I think.
You can buy the glass mounted ones at most car audio specialists
As said already, PlanetRock is THE station to listen to....................