I have an early 2009 iMac 24" 2.93 Core 2 Duo, 1TB HDD, GeForce 120 and 4GB RAM. What I am wondering is if the new models are significantly faster then the model I have. I am having trouble finding any comparisons to the older iMacs of early 2009to determine just how much of a performance bump these may offer. Mainly I use the computer for iPhoto, iMovie (not too heavy), iTunes, email and Internet. If I did get one would the i3 offer much of a benefit? I am thinking if I upgraded at all it would be to the i5, but maybe spending any $$$ right now is not the best place to spend more cash if the bump is modest. The larger 27" screen may be nice, but 24" is not small either. Thoughts?