Is this box for home or work? I'll always be an advocate for a top tier box at work. Albeit matco or snappy. Constant in and out, reliable locks and good customer service. I've played with the harbor freight 44 and while it's nice when it's new, if it gets beat on it gets worn out. I would use one at home, but not at work.
My work box is a classic 78, it hold everything I need to do whatever I need to do. My home boxes are a 68 epiq the 41" craftsman and a few older snap on boxes from around the 50's.
I ran with the 41 craftsman at work for years until I was tired of the limited space and the crappy locks that I needed several different keys for. I replaced that with the epiq, then changed jobs and left them both at home and brought the 78 to my new job.
Despite all the people who think a box is a box, think of a tool box as a safe. It is a tool, it is storage and it is mean to keep everything safe and protected. I'm not about to leave 10's of thousands worth of tools in a box that cost a small fraction of that just to save money. I save money everytime a tool isn't stolen due to a crappy lock design.
There's always plenty of used boxes out there for fractions of the cost new. Be patient, do research and play around with boxes that have seen the use and abuse that would be on par with what you plan on doing with yours. An *** for every seat and a box for every tool.