I use a table or the floor. (Always with a buffer between the card and the sorting area...the pack search decoys usually) Those trays are way too small for my collection, and I'd be afraid of the corners getting damaged by the trays.
VERY slow trading due to health problems. Not transferrable so safe to trade with, just moving is painful and can't always access the cards.
Cardboard History My COMC
New Collection Website: Cardboard History Gallery (Still under construction)
Tips on how to make your scans look like the card does in hand (No more washed out, fuzzy scans!):