on amazon the 15" macbook pro 2.53ghz 250gb is £1,216 but the new one is more expensive by more than £400! Is it that much better? I've been waiting for the updates for months but I'm not paying out that much more - simply can;t afford that.
Probably not. You don't provide a lot of helpful information (what you use your machine for, which model you were looking at), so nobody can say for sure.