4gb of ram for the 27inc i7 is 290 AUD for 4x2gb sticks. on crucial it is 158 AUD for the same memory. Shoild I buy here and upgrade myself? http://www.crucial.com/store/listpa...Core Intel Core i7 (27-inch - DDR3) Late 2009 Or are there better places/cheaper for Australian customers. And is it an easy DIY job?