I travel by plane almost every day, and I don't have time to waste with inferior products.I carry a set of 79lb tools in this case, and the wheels of my other cases would wear out. Because this case has four wheels, it seems to spread the load out, and the wheels and bearings have lasted so far. They are almost rollerblade wheels, far superior to the competitor's wheel with the plastic bearing babbitt.My tools leak oil on the inside of the case. Oil leaking from a non-waterproof case tends to upset the ticketing agents at United, but this case has remained waterproof for two years! The gaskets still hold well, but due to the length of the case, standing on the center will make it outgas (burp). The seals seem to hold the liquid tight, because there's no signs of any leakage on the outside.The length of the handle is good for my 6' frame, and I don't run into my own heels.The wheels are still smooth and quiet.Do not add the 3i-TSA3 locking hinges to this case. Purchase a lock instead.