The UX301LA has an SSD storage medium which is better than most comparable spec portable PCs that are a similar age to it. Most portable PCs that were released more than two years ago have an HDD storage medium. 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.
This laptop's storage medium (SSD) is actually the best storage medium amongst all notebook PCs that have been on the market for a comparable time to the UX301LA.
The worst storage medium amongst comparable types of laptop is HDD.
If the storage medium of this portable PC is too bad for you then you might want to look at the DELL XPS 13 (£1,199.99) (SSD).