Sampled them yesterday.
Armani - 9.5/10
Polo - 9/10
Givenchy - 7/10
Polo Black: Fruity scent. I get mostly mango from this one. One of its notes is "iced mango", but personally I don't think there's much of a difference between iced mango and regular mango stored at room temperature...perhaps just another marketing technique. It's not a bad scent but it doesn't last more than 20 minutes on me.
Black Code: Nice subtle Oriental scent. Many have labeled this as "Le Male light". The drydown is powdery on me. I like its balanced sweetness. It's never cloying. However, it stays extremely close to the skin. Best for intimate moments with a loved one IMO.
Givenchy VI: Just another gourmand. Nothing special about it except the green topnotes. The drydown is very similar to Rochas Man IMO. The only reason why I haven't bought a bottle of this is because there's too much of a clash between mocha and citrus for me. Another reason is that I already have enough gourmand scents that top this one (Hanae Mori, A*men, Rochas Man, Animale Animale, etc).