For the last 20 years I've had a 2 row holder with my deeps and shallows, and my mids where in the snap-on holder they came in. All the other sockets used these trays, but the mids. Finally uniform, they have a place.
Next hopefully a solution for Universal's, torx, Allen's, and all other odd balls.
Only problem is how they shipped it. No packing, just wrapped in thin plastic bag. Luckily it didn't break. I've broken several two row holders in the past, and was super surprised it wasn't broken when under wrapping.
Pro tip: flip over the last few sockets so that heavy side is down. It will avoid breaking the thinner poles.