From my limited experience:
Using supplied external antennas

Best sound... Boston Acoustics..Hands down ..no contest.

Best for the price. Radio Shack Accurian

Most sensitive. Radiosophy..by a little bit

Tabletop radio I would recomend to a friend to sample HD radio?.. Accurian.
especially if it goes on sale again.

What is you experence?

Dice Electronics has the best in-car HD radio and I-pod integration kits, with great quality and an affordable price. Their kits are for your cars factory radio so you dont have to spend extra money on buying another after market radio. I have one and I LOVE it. You also get free firm ware up grades on your kit.