Updateing to DAB radio

[yourtheguy]

Hi all thinking of fitting a DAB unit to my 07 V8V , i already have a Dension unit fitted and i am looking at the DAB-U add on from denison.
As my car has a heated screen the aerial from denison is not suitable so i'll have to change the roof one.
Has anyone done this yet and which is the best aerial to fit?

Thanks Dixie.