The Flex 10 has an HDD storage medium which is better than most notebook PCs that were launched more than a year ago. Most portable PCs 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 across all notebook PCs of this type and age.
The best storage medium across comparable types of portable PC is SSD.
Alternative portable PCs that have an HDD storage media currently available that you might want to look at include the Lenovo Yoga 2 11 which has better reviews; or the HP Pavilion x360 which is cheaper.
Notebook PCs with a better storage medium that might also be worth looking at include the Acer Aspire Switch 11 SW5-171P (SSD) which is also cheaper.