After using a decently modern machine for a three or four months (quad 2.66 core i5), it's become quite clear to me that the main bottleneck in the system is the stupid old mechanical hard drive. Its high capacity is nice (1TB) but damn, when the rest of your system is decent it really makes the HD's slowness stick out like a sore thumb.
Because of this, I'd like to upgrade to an SSD, at least for the main system and most-used software, at some point in the future. How many of you have already done something similar, and how has it worked out for you?