The LifeBook E554 has an SSD storage medium which is better than the HDD storage medium found on most comparable spec laptops that came out around the same time as it. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
An SSD storage medium is in fact the best storage medium across all notebook PCs that were launched around the same time as the LifeBook E554.
Across similar types of portable PC the worst storage medium is HDD.
If the storage medium of this medium processor core notebook PC is too bad for you then you might also want to look at the T420s (£1,388.87) (SSD), or the S540 (SSD) both from Lenovo.