Obviously it comes down to how will you store your tools, how much space do you want and the price.
I have a Harbor Freight 44 inch tool box and while comparing a lot of boxes for price and styling, I knew the HF one was the one to buy.
I bought it last year at their annual March, Parking lot sale for 375 out the door taxes included.
I like the sockets to stand up right while using the Hansen socket trays. I do wish i had a longer/deeper box, but in all reality, I dont have a 'need' for that. I will be buying an additional side cabinet this year for about 175 out the door.
I suggest looking at different boxes, reading reviews and videos, but my vote is a 44inch Harbor Freight tool box.