i didnt have that model, but one similar, i have to say for the money they crank. dual is fairly new to car audio but have been making home audio and dj equipment for years. they are not an unknown brand. the one i had sounded awesome, i only replaced it because i bought a kenwood that was sirius satellite ready so i could have my satellite radio in my mark. heres my old dual
I got the DUAL XDMA7715 yesterday and had it running in minutes (about 45).
So far, the only down side I get is that the MP3 player can only read up to 150 files...
The Bluetooth module is sold separately, but it easily allows you to place and receive calls through the unit. (hear from car speakers) I guess I want to get that and a Bluetooth phone too...
Bluetooth enabled audio systems combined with bluetooth hands-free phones are uber cool. I guarantee any future head-unit I buy will have that capability.
Until then the Tom-Tom GPS with bluetooth capabilities will have to do.