I guess that I like the C6 Z-06 because it came in the hatchback? Like this:
https://bringatrailer.com/listing/2008-chevrolet-corvette-z06-70/
Both the C5 and C6 have the best looking rear end of any Corvette, IMO. And that is the best view of most of them, not that I don't like the other views. Corvettes were really beautifully styled cars for a long time, the sweet spot for me is the C2 but also the late C1 and C3 interiors...among the best in the history of cars, again IMO. Kind of weird that their interior styling took a dump in later years while the exteriors remained strong.
I remember in the early 2000s, it was either a C5 or C6, there was possibly the best billboard I've ever seen both for image and placement on Sunset in West Hollywood. Might have been for the then new C6...it was just as you enter the Sunset strip from Beverly Hills at Doheny, the big curve and rise to the right...there was a billboard on top of a low building that was completely filled with the rear end of the Corvette convertible with a dude driving and a beautiful woman's blonde hair blowing in the wind. I don't think that it had any copy or words...just the image. It seriously made you want to go straight to the dealer and mortgage your life for a new Corvette.