I have a Macbook Aluminium 5,1 Intel core 2 Due, 4 GB, 160GB HD. I have had it for a 2 and a half years. 15 charge cycles on the battery which is 6 months old also has a newer trackpad around a year old. I'm hoping for around £400 for this...what do you think? If I can also have a few opinions, I plan to put this to either a lowest end MBP or lowest end 13 inch MBA. Will the 1.7 i5 be any faster at all in terms of gaming as a few games can lag a bit at the moment.