I spent $400 on a Crucial M4 512. The first one failed--no joke--an hour into use. After a reboot the system wouldn't POST, couldn't even get into the BIOS setup. I RMA'd it to Amazon, got a replacement that seemed to be working fine, until 3 weeks into use when it also died. I was in Europe at the time so needless to say that was a very inconvenient time for it to fail.

This is on a 2-year-old, run-of-the-mill Dell laptop. Maybe there's something funny about my laptop's hardware but it's been running without so much as a sneeze for 2 years now with its old "spinning rust" 640GB HDD.

SSD's are still early-adopter technology. I'm waiting another year before I try again, and when I do I'm keeping the former HDD at my side just in case.