Well accidentally drop my 8GB MD on my ceremic floor from about 4ft I guess, bounced a few times and then stop. Heart almost drop together as well. But guess what it survived. After the drop I filled the whole disk with data and then format it then filled it with data again. After which I left it on for 1 whole day and then write on it over and over again and it still work. *phew*
So I guess for MD to survive a fall is really true. May be the new generation of MD has lots of such shock protection build in.
Did a test, it takes me 4min plus to copy a 2.5GB worth of video to the MD, and after which to read back the pics from my 10D RAW take 4sec to load. The feel of MD and CF is almost the same to me.