56" Extreme/Gator/Rollcart/Tool Vault

[F3X]

Looking into a 56" tool box.
Of those that already own one of the brands can you tell me if you have any issues with racking while moving the box?
I did see a post on here where a guy tweaked his box by rolling over/into a step in the slab. Sounds like he also had issues with the company as well.
My slab has a 1/2 or less step that I have to go over. My MATCO 4s has no issues (I dont crash into it, I take it at an angle) and I am sure a Snap on would be fine as well.
Once these boxes are loaded up with tools will they hold up to moving around the shop daily?
I am also shopping for a used KRL locally but they seam to be 2x the cost.

Would you rate these brand boxes similar to a Snap on KRA?
Thanks,

 

[Mr_B]

I would be inclined go older Matco cabinet (7525) as they proper tough and used can be a steal for a box as good or better than krl .
Some strictly toolboxes models better than others but better stuff is 2K range and you can buy real decent used matco 7525 for less and it won't loose much or any value .