Despite my participation in the various SSD threads here in the Mini forum, I've yet to take the dive and install one, mostly because of the cost. However, I've found out that by moving my user folder onto one of my existing external 3.5" drives, I can get 'halfway' toward the magic speed boost provided by SSDs. Boot time (from power to login screen) is marginally faster, but going from login screen to fully-displayed desktop is dramatically faster. Apps also launch faster: Mail and Scrivener for example are loaded within one bounce. All in all, a perceptible increase in responsiveness: with 8GB of RAM, I'm quite satisfied with my setup for now (well, except for relying on the old Core 2 for video encodes, but that's another story...). I'm genuinely impressed at the boost I'm getting with the relatively low-end gear I'm using (the stock 5400rpm Mini drive and a 2TB Hitachi 5900rpm hooked up via USB). Separating system/apps from user data is usually a good thing to do anyway, so it's worth checking out if you don't want to spend the money for an SSD at the moment. EDIT: Forgot to mention, I also installed OS X on a small 60GB partition on the outer edge of the Mini's internal to make that as fast as possible. In Disk Utility, whatever partition is at the top of the list is on the outermost area of the physical disk.