i think the last time i played with an eclipse, the LCD was pretty low resolution. not sure about the one you show, flashburn, but when i think eclipse i think great sound contouring options/crappy graphics.
as far as the nav's i think kenwood's got it right. be willing to try the pioneer one too
if i decide to use my 3100 in my G35C later on and get a nicer unit for the Z.