The October issue of Wired tests four HD Radio models, the Cambridge SoundWorks 820HD (8 of 10 dots), the Polk Audio Designs HDX3 (7 dots), the Sangean HDR-1 (6 dots), and the Radiosophy HD100 (4 dots). Note that the tests seem to have been for usability and sound only, not how well the radios actually pick up the HD Radio signal and, with HD Radio, that's important. The inexpensive Radiosophy unit and the two I mention below all test well in that area. Link: Wired.
Note that there are many other HD Radio models on the market. For example, at the lower price range there is the Boston Acoustics Receptor Radio HD that I have on my desk at the office and the Accurian Tabletop HD Radio sold by RadioShack. --Dennis