If your just tinkering at home the chrafsman boxes are great for the price. I'm on my third Snap-On roll cab and believe in them and have had great support from my dealers. I have seen a Mac boxes tear at the seams due to the weight of the tools in the side boxes but it was replaced under warranty. My first rollcab had roller bearing drawers (before the lock and roll feature) and spring suspension wheels. The drawers were held in by plastic detents on the hinges when closed. From across the shop, which had a slight slope to the floor, I saw one drawer roll open when it reached the end of it's travel the jolt alowed another drawer to jarr open, and another until the springs sagged and all the rest started to open when the box tipped and smashed several drawers. The rep warrantied that box but swapped back to the standard wheels. When you have 50k+ in tools and productivity is a factor in how you get paid, you need to be organized, be able to keep track of you tools and be able to secure them at the end of the day. I work for a heavy equipment dealer and the big wrenches and sockets aren't light. Several of my drawers have double up roller slides. The big boxes don't get pushed around daily, you push a tool cart and go back for more. Now my tools are in a Peterbuilt service truck and my box sits at home with my woodworking tools. There are many deals on used boxes, be sure to get a receipt as I have heard of shops getting cleaned out. If you wrench for a living keep a tool inventory list up to date and make sure yor employer has coverage.
