per:
-quiet,
-Good response,
-moderate heat generation,
-cheap price,
Cons:
-As always reduced space by selecting the formatting (it is really about time for a leveling of the space specified by the manufacturer).
Conclusion:
For the price, the Western Digital WD5000BPKX is a reasonable choice for the system extension of older devices, based on my experience with a vast number of similar Western Digital hard drives will probably perform their duties reliably many years.