Here's what I've got, what I want, and what I'm thinking about doing... Have a 24" (first gen Al-iMac, max'd 4gb, 1TB hd, 2.8ghz "extreme" proc. v7,2). Hard drive is 90% full, things are slowing down. Aperture (or LR3) is slow with my 7d raw files (+/- 20MB/photo). I've seen the future and it is the SSD. So, my idea is this- Replace internal drive with 128GB SSD. OS/Home folder(sans data) & apps will live here. My data & libraries will be migrated to my 6GB Drobo (2nd. gen) FW800 unit. My rationale: -Currently I use the Drobo for Time Machine & big video file temp storage. Kind of overkill, hardware-wise for what I need. I've got enough drives around that I could build up a cheap FW800 TM backup for the SSD and the Drobo without much cost or difficulty. -I can't afford a new iMac. Things to keep in mind: unlike the iMacs which immediately preceded the new ones introduced last month for which e-Sata options abound, my superdrive is a darn ATA interfaced unit. Can't get cute with two internal drives in this case. So it comes down to this- does it seem reasonable for me to expect this system to be significantly faster than my current rig? I realize the Drobo and it's interface can't compare to e-Sata/Sata 2/3 speeds, but hope that the SSD will be doing the bulk of the heavy lifting and apps, particularly Aperture, will run fast. I wouldn't mind risking $300 plus installation to find out. Any commentary (including- "you can't see the forest for the trees, idiot") is welcome. I know that relocating data, moving referenced photo files, etc. will be a time consuming and scary process, so I'd love to hear my idea is stupid before I jump in... Thanks!