I want buy a cheongsam for my party, witch one is the best?

i want buy a cheongsam for my party, witch one is the best?
http://www.stylishcn.com/chinese-fashion-cheongsam-prom-dress_703.html
http://www.stylishcn.com/chinese-sleeveless-dragon-and-phenix-long-cheongsam_465.html
http://www.stylishcn.com/Chinese-traditional-longevity-and-chrysanthemum-printing-long-ch_329.html
http://www.stylishcn.com/35-silk-brocade-two-pieces-cheongsam-wedding-dress_704.html