I'm trying to improve the marginal DAB signals and poor AM reception
on my system and have been looking at the all in one roof mounted
options. I've got a shortlist of these

DAB3 GTi Flex AM,FM,DAB aerial
http://tinyurl.com/75m3q

Blue Spot DAB & AM/FM combined roof mounted aerial
http://www.bluespot.co.uk/stock/dab_diplex.asp

JVC HAL2
http://tinyurl.com/8geeb

Panorama KF-DAB
http://www.panorama.co.uk/pa/catalog...unt/index.html

Anyone have any experience or comment to make about any of them, are
any of them worth the cost? I already have a roof mounted DAB aerial,
the other bands are etched into the side windows and are rubbish but I
don't want the car looking like a porcupine so the all in one solution
is the only option.