one unit that is better is Soundfly. For $59 you get the blue tooth and a SD card slot. Much easier to place music on a SD card. I have the Soundfly Aux for $45. It has the SD, USB drive, a easy to read info screen that tells you what is playing and time and transmits that information on the car radio display on my other car with RDS. Haven't tried on the Crossfire but should work since our radios have RDS.