The Premium Pack is your best bet. £290 from my local GameStation with either Hitman Blood Money or Tomb Raider. You get a wireless pad, built in wireless connection, one month's membership to Xbox Live Gold, Headset for online play, Hard Drive, HDTV compatibility etc.

Core pack gets you a pad with a wire (trust me, after using a wireless pad you'll never want to go back) no hard drive, no headset, no built in wireless adapter..... Not worth it IMO. Pay £200 to buy it, then buy a game, and a memory card. You won't be far off £290 mate.