WD Raptor X 150GB V WD Raptor 150GB, what's the difference? I'm thinking of my future mac pro setup, I do mostly print graphics and a bit of gaming on the side. Can you say if this setup would be any good? 2 Raptor 75's in Raid0 for boot disk + all apps. Stock 250 drive for all files. (I already have an external Seagate 320 for backup) I was thinking the smaller the better for the boot Raptors less seek time and fragmentation would this be right? I could get everything on to their 32GB drives.