Lacoste PH - (the grey one) is very nice, and quite refined for a "designer" scent.
The original Lacoste (white bottle) is a great classic green sporty fragrance.
Lacoste Style in Play (red) is a SUPER-sweet candied sport fragrance that I personally once admired, but now find far too sweet and cloying, especially if overapplied.
Lacoste Essential (clear bottle, green juice) has become somewhat of an instant classic, and deservingly so, as it is a nicely done designer citrus.
Lacoste Elegance was somewhat decent, but seems to have flopped.
Lacoste Cool Play (just like the Style in Play [red] bottle, but blue) was a limited edition, and was incredibly boring.
I feel like I'm missing a couple...
I've never seen a grey aftershave either. Do they make one?