Ok quality for the price, but better solutions exist

After two years of use, still not ready to change their car ... but enough of this device whose sound quality is still not up to the audio system of my sedan.
Before buying a transmitter, look for "Connects2" on Amazon and you will see that there are cars to current models of housings that plug into the charger connector external CD of the original car radio.
For forty euros, it is still a notch below CD quality but it is much better and more convenient than the transmitter.
Connects2 CTVSKX003 OEM Skoda Octavia Aux Input Interface Adaptor

[** 15/05/10 ** revision of the comment]
THERE IS WELL THE SHUFFLE MODE (shuffle)!

Information from the English reviews from Amazon.com: There are indeed Shuffle mode but it is not documented. It takes a few seconds and press repeatedly on the Play button on the unit (not the remote). The display shows successively symbols:
CP (for Play)
CA (repeat for All)
CS (for Shuffle)

Similarly, if you hold down the following buttons qq seconds / down, you can increase / decrease the volume from the unit.

Score increased to 4/5, as it lacks the title display via RDS.

Compression information: such number of portable mp3 players, playback files compressed to 192 kbps (or more) has flaws ... but on this type of device, the 128kbps enough!

According to the US comments, the issuer would be among the most powerful and therefore less likely to suffer interference.

[** ** Initial comment]
The +
Price +
+ Small footprint
+ Possible choice of the transmission frequency over the entire range 87.5 - 108 (no significant interference observed on 87.5 even in a big city like Toulouse)
+ Sound quality at least equal to that of a cassette adapter

Les -
- No "shuffle" mode
- The remote control should point to the front of the unit
- No RDS to display song titles read
- Its quite low transmitted by the device (you have to push the volume of the car radio 2/3)
- If you have a quality audio system in a car with a cozy atmosphere, you will notice that the sound is still significantly down compared to the CD (including dynamics) ... but difficult to attribute to limitations the device or FM transmission

In short, for the price, you do not risk much to buy it, but you can easily change the radio in your car, it is best to buy an MP3 car radio.