For desktops I benched my caviar blacks and they are what I thought......awsome for their capacity.
However in laptops there is NO GOING BACK!!!!! I am running on a SATA-I with no AHCI chipset support and it still flys.
Windows start and shutdown is about 50% faster but where I notice it, is in the multitasking, and opening applications. They are instant like owning an i7 system.
Now if the Samsung 830 lasts a long time, I will be really happy. But being an SSD in general I don;t plan on it,