Every FM tuner i've tried has been pathetic. I think its just my car though, i have a powered antenna.
This includes the visteon/directed HD tuner as well... its sitting in a box in the corner of my room because it was so crappy.
it works fine in my house though, i should hook it up.
Also one thing i've noticed about HD radios is that unless you live in an area where the stations have actually made an effort to make QUALITY broadcasts, the HD signal will be delayed from regular analog signals.... so when you lose reception (which happened a lot for me) the music would jump ahead and back 5 seconds every 10 seconds. it was aggrivating as crap.