Digital Proofing--Proof Positive

(Note to printers: The comments in red parenthesis are the unspoken concerns that the print buyer/designer has that you need to address with specific information and evidence.)

1. What am I looking at? (Contract proof? Digital Dylux? Other?)

2. Why is this better for me? (Faster? Better? Cheaper?)

3. How do I know nothing will change from proof to plate? (Consistency?)