Update:
Bought the Seagate 1TB Hybrid drive. Installed Mavericks using USB stick. Used Time Capsule to restore from last back up. Went to sleep (4 hours over wifi; I know, I should have wired directly to the Time Capsule).
It's too soon to notice the speed increase, if any, as it takes time for the drive to 'learn' my habits and place frequently used processes on the 8GB SSD portion.
Only issue is that this drive is a louder than the stock Hitachi that it came with. Not desktop loud. Not defective loud. Its just that with the stock drive, I never heard any noise at all.
I am debating on what I will end up doing as one of my favorite features of this MBP is the silent operation.