the raptor is at least going to be faster for seek time (random access) due to the 10K rpm speed. The 1tb drive may be faster for sequential read/write speed due to higher bit density.file.
I just bit the bullet and bought HDTune. Seems like seeks are quicker with the Raptor, but reads quicker with the Caviar Black:
How much did HDTune cost you? I could have saved you some cash.
I still think I'd use the VR for boot & swap. It may not be a knockout blow, though. I'm sure there's benchmark tests out there comparing boot times of some different drives.