New Head Unit question

[cwitte]

Hello. I'm ready start replacing my head unit. Problem is I don't know enough. I think I've got it down to these two units (I picked the crutchfield site for ease of comparison, but don't mind buying from anywhere).

Which of these should I pick and why?
http://www.crutchfield.com/p_130P340...=T#details-tab
http://www.crutchfield.com/p_113DDX4...ml#details-tab

I put up a Poll to help decide.

Neither is a good answer too if I'm missing something that should otherwise be obvious to someone more experienced.

After this, I'll be putting a sub where the spare tire was, upgrading the stock front speakers, and adding an amp if it helps make the decision easier.

Secondary followup, if I don't mind wiring the harness myself, is there value in purchasing from any particular site.

Also this is cross posted on MI.

Thank you for your help.