Yes the differance is in how fast you can load files, always buy 64mb cache dont buy 32mb cache as it speeds up the load times exponentially. Considering the costs of SSD's these days its better to go with them over a Velociraptor. The price and preformance of the velociraptor arnt worth it.
Thanks for the quick replay. What I was asking is if its better to use the Crucial Adrenaline with a VelociRaptor32 MB or is it just about the same if I just used used the cheaper Western Digital Caviar Black 7200 RPM 32MB with a Crucial Adrenaline. My friend needs about 350gigs of storage and any ssd over the 256 gig is still expensive.