I use my Sony tuner daily, and like it a lot. I've hear one interesting attribute.
The local classical station, Seattle's KING FM, broadcasts in HD, and it sounds great, except I think I can hear excessive amounts of compression. Compression is good when driving due to the ambient noise in a car (especially most the cars in my family fleet). Over the HD broadcast, though, quiet passages have too much noise. The noise floor here is much higher than when the announcer is speaking, for example. I've emailed KING, but no response.