If the 05 is significantly cheaper, I'd go with it. Only thing I regret not having in my 05 is the projectors...

I prefer 06+ tails too, but its not a big of a deal or worth $$$ to upgrade it

 

Did the 05 come with under-body aero diffusers? My 06 did with the aero pckg. And if you like RAS (rear active steer), 06 had them as an extra option, not available at all on 05's.

 

go with 06..

 

what is the different colored piece under the rear bumper called?

 

Thats the rear valance. They can be painted or wrapped in vinyl which gives it that appearance.

 

Its all mostly opinion. I think the 05 looks better because I don't like the molded lip spoiler thing on the 06. But then again I'm gonna have to get 06 projector lights for my 05. And I also think the tail lights look better on the 05.

Here's how it works out for me. The 05 with a spoiler looks better than an 06 with a spoiler. But the 06 without a spoiler looks better than the 05 without a spoiler. So for me it came down to wanting a spoiler or not (and I did).