Unfortunately, I am unable to get to an Apple Store in a hurry, yet I'm almost ready to order a Macbook - the qestion is which one? So I need people with first hand experiance to help me out! Right three easy questions (for those that have played with both bottom model and second one up) 1. In real world application, do you notice the diference between 1.83ghz and 2.0ghz? I don't mean benchmarks, I mean the 'feel' of the OS. 2. Logic would tell me that the 1.83ghz would be less likely to suffer from heat issues with it been clocked lower. Is that the case? 3. What about battery life? Any more from the lower clock speed, or would it be to little to be noticed? Thanks a lot guys!