Westling is the way to go. The rails are heavy enough that they will not shift around in the drawer and the socket mounts hold well enough that I have yet to have a socket fall out.
I worked many years in individual maintenance. we had a mixture of sae and metric. a lot of the time, we weren’t working near our tool chest. what worked well for me was was magnetic rails with 10 to 19mm on half of a rail and 7/16 to 3/4 on the other half. this made it easy to grab one rail and go. I did the same thing with my 1/4 and 1/2" drive sets.