I've had this 24" Early 2008 iMac since 2009. It has served us a well, but over the years with each release of a new Mac OS and hungrier memory requirements the thing feels so sluggish and inadequate now. I've done all the permission repairs etc. The hard drive is still ok. About a year ago, I've upgraded the memory to 4 gigs total (this iMac maxes out at 6 gigs ram). A 4 gig memory stick is about $100. (Memory prices suck for this iMac) Spending that much just to add 2 more gigs of memory seems so wasteful. I'm considering a SSD upgrade as it should improve start up, log in and launch of applications, but ambivalent about putting too much money into it. I guess the debate is whether it's worth spending $150 SSD plus bracket to improve this 7 year old Mac. The iMac is for light-regular use and not our main machine.