I have a DIY Fusion in my early 2009 iMac with a 256GB Crucial M4 for the SSD along with a 2TB Seagate HDD. I am wondering if I will see improved performance for things such as loading and working with the iPhoto or iMovie libraries if I upgrade to a larger SSD to replace the M4 and create a new fusion? Such as the Crucial M500 960GB? Anyone had experience with difference size SSD in a fusion setup? I do not want to spend any money on an older computer if any difference will really be minimal compared to what I have now. Thanks!