I have an older 24" core 2 duo. The computer is working fine, however it is dated. Because I have had no issues I have been on the fence in terms of upgrading. I just noted that Apple has upgraded to the Haswell processor..is this the upgrade to seriously consider? A couple of other questions if I upgrade. First what is the sweet spot in terms of how much Ram for a moderate user . I am not a gamer or heavy graphics user...however I like responsiveness. Also..where would you recommend buying ram outside of Apple? Is the i5 Haswell a good choice or would you recommend the i7? Lastly, is the Fusion drive worth getting, I do not feel I need the SSD? Thank you for your time and comments, I appreciate the knowledge this forum provides.