I have the 500GB version in my Macbook , they are very quick compared to the standard 5400RPM drive that i had in there.
Only problem with these drives on a Macbook is that the latest SD23 Firmware versions dont power down to power save at all , so they will eat a bit of battery life out of your device.
I have a BootCamp of Windows 7 64-Bit Ultimate on it as well , and it boots up real quick.
The 4GB SSD on there you dont see that all , its seemless.
Although they are a bit pricy , they are deff worth a look if you have a laptop/netbook, but as a desktop drive , you might as well get something else, cheaper and overall faster.