braindrop -
I\'ve tried a bunch of transmitters with my Rio SP250 player (aka iRiver IMP250) and, for the car, the only one worth the price or trouble is the Sound Feeder. I have the SF-100. It covers the entire FM band fully tunable. One switch for 3 band segments & tuning dial to tune within each segment.
Some of the others had only two or four fixed switchable frequencies which does NOT cut it here in Miami where the FM bands are over crowded.
The SF-100 gives good reception & clarity for me in a Ranger pickup.
For home, I use a Ramsey FM100B. It isn\'t cheap and comes as a kit. But the cheaper ones are crap at very best and, in its price range, it is the best bang for the buck (IMHO). I have mine hooked to a desktop serving as my Juke Box with about 30Gb of WMAs. It easily covers my house & yard and isn\'t going to cause my neighbors to be calling the FCC on me.
You should know that NO stereo FM radio is going to give you full CD quality, however. The way FM stereo works, the audio must cut off by about 15kHz in order to not muck with the 19kHz \"pilot\" signal that is crucial to the FM signal multiplex. But MY ears can\'t tell the difference.
Ramsey has a great forum to lurk or ask questions in.
If you need more info, holler back.
Bob W
Miami FL
90.9mHz flea power