Summary: SSD hard drives are the way to go. I bought this on sale between Thanksgiving and Christmas last year, 2013. I installed it in my desktop computer. I had to buy a mouting kit for it to fit in a 3.5" bay. My system boot up times are about 2-3 times faster. I will never buy a spinning disk drive again, especially since SSD prices are dropping. If you are on the fence about geting an SSD, I recommend getting one.
Summary: This drive is my favorite thing about my PC. It boots in seconds. I restart my computer for fun now. Everything I install on it runs faster than Usain Bolt on PCP. I installed some games on this as well. I get into multiplayer games before everyone else, and loading screens are virtually non existent. This was one of the best upgrades I could have made, I am so glad I got this.
Summary: Bought this for my laptop. Best upgrade for an existing system I have ever purchased. I put the old drive in an enclosure and use it to store additional data. Laptop boot times are astoundingly quick and general performance increase is noticeable. (The drive was installed in a Probook 4430s - i3 with 4GB RAM) Honestly believe after using them that SSDs are the only things that can have a major increase in performance of current generation machines all else being equal.