Dior Homme Intense is good for the evenings and going out as it has that smooth sexy vibe. L'Instant Extreme is better for the day as it lasts twelve hours or so . Both are excellent though the vintage DHI is the best though the reformulated one is good if you have not tried the vintage. ( Its not worth getting the extreme and the EDT L'Instant. Extreme is the way to go).
Best too try them in a store again if you are unsure as you are the one that has to happy with the fragrance.