What do you mean it will be in your home after 3 days ?
I must say, ive ordered from GAME too. I don't care too much about price, so i just paid for the most expensive form of postage on their website and i even contacted GAME customer services to check if i would get PES 2009 on release day if i pre-ordered it.
The guy i spoke to said GAME policy is to post the game as soon as they have it in their possesion, which often results in you getting the game a day or perhaps even 2, before it actually releases. They often have the game in stock around 3 or 4 days before release i was told. So when you choose the most expensive form of postage, you may get the game even before the 17th.
But i was told, if it doesn't come before the 17th, it will certainly be there on the morning of the 17th. Thats what swung it for me, so if you want it definitely on the 17th, get it from GAME. I've had bad experiences with play.com before.
And if you take the risk of not pre-ordering and buying on release day, you run the risk of the game being sold out.