OK. Will take a closer look at raid0 as an upgrade in future times.
Got rid of the VelociRaptor. Added an Intel X25-V 40GB 34nm MLC SSD for booting. Also a WD Caviar Black 1TB WD1002FAEX for storage.
As for the PSU I have dumped the HX1000.
Any opinions about these two-
1/ CoolerMaster Silent Pro M850
2/ Thermaltake ToughPower XT 875W PSU
Both are around the same price & over $100 cheaper than the HX1000.