Pull out bins work much like a kitchen drawer, so attention should be paid to the same things you would look for in a smoothly operating drawer. The track for the pull-out support should be sturdy, and the drawer part should be built in such a way that it’s removable for easy cleaning. Check to see that the action is easy and doesn’t stick. If the pull-out track is made of wood, it should be rubbed with wax or a bit of bar soap to help keep the wood smooth for easy action.
Fold-down bins are handy for the ends of islands or for oddly positioned locations. They often work on side supports rather like the pull-down deposit slots at the post office. The side supports should be made of sturdy metal that’s unlikely to bend or tear with extended use.