To be honest i havnt used a non raided SCSI setup so i cant coment really, against my raided raptors the SCSI is faster and is more responsive. over all iam really pleased with the SCSI setup so far! the drives are quiet and i dont notice any diffrence noise wise over my raptors.
what makes this a bonus is the fact i got this whole setup off a well know auction site for a fraction of the new price, yet all items were new and boxed and still sealed, so iam well pleased!
I have now downloaded the latest drivers for my card, which have improved things even more! if only SCSI wasnt so expensive more people would see the gains to be had.