What a great head unit! I’m running this head unit to a 1000W Profile 4ch amp, to 2 sets of Polk db 6500 with a Kenwood KSC-SW1 powered sub to round out the spectrum. I also have the XM black box and digital adapter. The Pros: The USB and SD card options are a real breakthrough in music options. The deck can operate a 512Mb SD card, and a 4GB flash drive. This means no more CD’s rolling around in my truck. The sound quality is amazing! The motorized face works smoothly, and seems fairly sturdy. The Cons: This head unit has a pretty large learning curve. Because of the single knob/enter button, scrolling and selecting options can be kind of a pain. Initial setup is also a painstaking task. It has sound settings for every seat and speaker in the car, but trust me, the sound quality is worth the 1.5 hour setup. Also, the display is a little on the grainy side. Overall I would highly recommend this unit. Once you’ve taken the time to learn the menus, it’s a great unit for the money.