those things were designed to run off mechanical drives. so whatever you fit it with will be screaming fast. the bottlenecks you’re concerned with arise with workstation-class machines with fully implemented PCI lanes and such, which are pretty rare in laptops. HMBs also require a beefier CPU as all that buffering introduces overhead; not noticeable on a 6-core Ryzen, noticeable on a dual-core decade-old i5.
summarum: whatever SATA SSD you fit it with is more than adequate. obviously, don’t go with no-name “brands”. also, save yourself the bother and don’t dick around with adapters, just fit a regular SATA 2.5" SSD in there.
borg + vorta. borg is the undelying tech, vorta is the UI. the UI is a little bit rough around the edges but it’s immensely powerful for a wide array of use cases.