The ENVY x360 has a better storage medium than most 2 in 1 laptops that were released around the same time as it. This HP portable PC has an HDD storage medium, whereas most portable PCs of a similar age and type to it have an SSD storage medium. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.
This laptop's storage medium (HDD) is in fact the worst storage medium across all portable PCs of this age and spec.
Across comparable types of laptop the best storage medium is SSD.
It may also be worth considering one of the other portable PCs that have an HDD storage media currently available including cheaper laptops such as the Flex 14, the Flex, or the Flex 2 14 all from Lenovo.
Notebook PCs with a better storage medium that might also be worth looking at include the Lenovo Helix ($1,099.95) (SSD) which is also cheaper.