Anyone have it? We were just installing an HD receiver on my boss' car today but it appears the receiver was DOA. It got me thinking, I need a new head unit for my car, and I was planning on gettin sat radio, but I just found a head unit with built in HD. I like the fact that it has no monthly cost, and NYC has an HD country station(big thing I like about XM/Sirius). Does anyone have an HD radio, is it just a gimmick or is it worth it?