Is it better to buy a computer with an all-solid-state hard disk or a solid-state plus mechanical one?

All-solid-state hard disk is a little better, better overall, and faster data transfer speed, boot running faster, while the combination of solid-state hard disk plus mechanical hard disk, because it is not one, there is still a difference in transmission speed, so it is prone to problems, the boot speed will be affected, the transmission speed is even less fast