I need help choosing a new iMac. I was thinking go mac pro but due to a tight budget I have to stick to an iMac at the moment. I currently own a iMac G5 but I want to move onto a faster processor. On Apple's Refurb store they have both 24" iMacs, Alu 2.4 and the White 2.16. For those who have had experience with one or both of the these iMac's can you answer these questions for me? -Is their a big difference in the speed of the processors? -Alu iMac max memory is 4GB. White iMac is 3GB. Is that 1GB really a big difference? -Does the Alu iMac still have issues with condensation within the glass? -***Any inputs you all may have please let me know*** The price difference is $150. So if you all would kindly give me advice I would really appreciate it. Thanks!