The HP ENVY x360 has a better storage medium than most laptops that came out around the same time as it. This portable PC has an HDD storage medium, whereas most laptops of this age and type 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 portable PC's storage medium (HDD) is in fact the worst storage medium amongst all laptops that were released more than two years ago.
Amongst similar types of portable PC the best storage medium is SSD.
We think you might also be interested in some of the alternative laptops that have an HDD storage media currently available including the Lenovo 14, or the HP ENVY x360 which is cheaper.
If you want a laptop with a better storage medium then you might also want to look at the Toshiba U920t (SSD and higher rated) or the Toshiba Z10t (SSD and cheaper), or the Lenovo Yoga (SSD and cheaper).