I would love for this data to be added to product reviews and packaging. I'm with Jeff, and would still buy an SSD drive. An SSD is the single most significant upgrade you can make to your computer. It's quite surprising how much the OS is limited by disk read/write speeds. Computer "speed" used to be limited by CPU cycles, then it was RAM. Now it's disk throughput.
At least data like this puts data backup into the proper perspective.