I am wanting a double din head unit that is the best of the best. I have narrowed it down to these two. Eclipse AVN6600 or Pioneer Z1.

I am leaning towards the Eclipse AVN6600 because it seems to be more ahead on technology and I am just partial to Eclipse head units.

What do you guys think? Any reviews? Anybody have either one of these and what do you think of it? Any opinions?

All the help you can offer would be great.