I personally like the look of the V6 front fascia better. I am not a fan of the faux-mailslot. I feel that without it, the front end flows smoothly and uninterupted, focusing on the wide upper grille. However, if the mailslot was functional, it might not bother me so much. The V6 fascia is also tucked up a bit more than the V8, and has more narrow corners. This is the same lower treatment the Camaro Concept had back in 2006.
Dont get me wrong, if I could have afforded the V8 at the time, then I certainly would have gotten it. The mailslot, wider corners, and lower front light-catcher all give the SS a more aggressive look, which was the design team's intention.
I think Hylton did it best, got the SS and covered the mailslot. Best of both worlds!