I am using the
Creative Sound Blaster Jam Ultra-Light Bluetooth Headset and the
ESYNIC Bluetooth 4.1 Music Transmitter. The sound is actually quite good. The signal can get blocked at times since the metal of the iPod tends to pose a problem. But generally, the signal is good and I can control the volume on both the iPod and the headset.
Both the headset and the bluetooth transmitter are version 4.1, so there is virtually no lag when listening to music or watching movies/videos. Additionally, the transmitter also supports apt-x, which is the newest type thus far.
A cool side effect I discovered is that I can use the bluetooth device as originally intended as well.So, I just make sure the iPod is off, lock it, and then I can plug it into another device (i.e. computer) using the supplied 3.5mm cable and into the iPod headphone jack to listen to that device with my bluetooth headphones. Really cool.