If $$ is no object... Saleen. This I think is the BEST looking aftermarket hood for our cars.
If it is...... then VIS.
I dont like cervinis stuff.... most of it is copied from prev gen and doesnt flow right with the new body style. Besides.... the venom looks better regarding the "twin" duct hoods.
EDIT: i forgot to mention, I have not had experience with VIS, but a few friends in the past have regarding import hoods. One got one that was perfect shape, and the other got one that had horrible fitment. At least with Saleen you know the quality is top notch.