Thon Rack Is a 3.unit rack very light, compact , with ergonomic design and a good stability and handling
I use the rack to transport my racks unit in theater tours, and rack work very well. the machine inside is safe and good blocked.
Materials are not bad , structure is safe but can be a little bit stronger.
the big mistakes for me are hinges and handle on covers; rack can be put on a orizontal surface only by one side, and it could be a problem in some situations.
yes: cost, materials, safety
no: hings, position on stage, endurance