I have used 1 hitachi, was very nice, quiet and good performance (better than Maxtor at least), else WD and Seagate are into H/D sector preciously, go for it.
Samsung's CD/RW is currently in my usage in onwe of PC's, I am very impressed with its performance and stability (never failed a CD while writing, where other drives SONY and MSI failed.)
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"