I have been a diesel mechanic for more than 15 years, owned Craftsman, Snapon, and many others, but this has been the best bang for the buck I have found. For this price you cannot even touch a used box of this size from the major brands and it easily matches their quality. Slides are smooth and very strong. First thing I did was stand in the bottom drawer and bounce. Pulled out one of the top drawer and hung off of it with little give at all and I weigh 227lbs. I would not hesitate to purchase this again or recommend it to anyone else. I can only think of three downsides: I wish it was made in the USA (support the home team!), I prefer drawer latches to detents, and I wish there was an option for more shallow drawers (I prefer square inches to cubic.) In daily use I find the detents to be a little strong, but it does come with softer ones if preferred; the casters roll smooth and the spring suspension lets it roll right over small bumps and debris and the fixed wheels in the middle make maneuvering easy. I just couldn't ask for a better deal on a toolbox if this quality. Also do not hesitate about buying online. I was a little hesitant at first, but after seeing so many positive reviews I gave it a shot. Customer service was awesome and very prompt with replies and made sure to call once my order was processed to confirm and explain everything. The order was processed and shipped out quickly and arrived within 3 days. If I am ever in the market for another toolbox I will be a repeat customer ...(Posted on 5/12/2013)