Steam Coupons

This afternoon i took these 4 steam coupons and they are valid until November 21 (today)
So free coupons :)
75% Rochard Autumn Seal
50% Alan Wake Collector's Edition

I'll use one of these:
50% Legend of Grimrock
50% Alan Wake Nightmare
for me and give the other one to someone.
Tell me what game i should buy.

Please take them only if you have the money to buy the game,nobody wants to trade something that is valid for a few hours.