The rigid is definitely cheaper, you don't need to qualify that as opinion. Better depends on what things matter to you. Ridgid has very little variety of boxes. For someone looking for a 3 box set for remodel work the Ridgid kit is tough and gets the job done. For van racking, drawers, and diverse box types tough system will be better than the Ridgid at an even cheaper price if you get the right sales. For finish work and smaller vehicles or in the shop tstak will be a better fit.
Packout is a bigger box, but they are really targeting more at trades that need more parts storage. Notice how many of their boxes have clear lids? Half height and half width boxes, integrated backpacks and tech bags. For most people the choice between packout and Ridgid should be pretty clear, with the DeWalt systems an option for either.
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