The antenna is the same as the Delphi, just a longer length. I got mine from Crutchfield a few days ago, $299 free shipping no sales tax. Much better sounding then the Delphi, if you have a highend system. If you like XM you will love this new tuner. My only complaint is why did it take so long !!
Polk Audio XM Radio Reciever A Winner
I just received the new Polk XM radio receiver. I planned a series of a/b listening tests with my old XM radio. It only took about 10 seconds of listening to realize how much the sound quality improved. Highly recommended. It is not quite cd quality but far better than the standard fare. FYI my system is Rotel preamp, Adcom mono blocks and Magnepan 1.6s.