I've Googled this and seem to find just older information. That is, early this year and last year. I'm not sure how much as changed, if any.
I'm going to do a new build next year, when the Haswell CPU arrives and am heavily considering moving to SSD. My current build, I used a Hitachi HDD for 4 years easily. It still works, I use it as a backup drive now (using a HDD enclosure) as I've upgraded from 500 GB to 1 TB (Samsung Spinpoint F3-HD103SJ) and have used it for a year and a half, zero problems.
Would I get the same reliability out of a SSD? I've read they begin to deteriorate after a year, which given the price, doesn't make them economical at all. Yes, they're faster (as we know), but screw it, I could go grab a cup of coffee while my computer boots up. I don't mind the extra wait time, particularly if it's going to only last a year.
I'd like for Toms to possibly do another article on SSD reliability. It's been about a year and a half. Haven't things changed? Don't we know more now about SSD reliability?
Regardless, I know I'll see a boost in speed, moving from a SATA-II HDD to a SATA-III HDD.