If your going to have a hobby car like this you will end up collecting a lot of tools. If you've been doing this for a while you already know this. If your new, get the biggest one you can afford. You WILL fill it up. I had a very small box to start with. Then I went out and bought this bad boy from Harbor Freight Tools and I am so impressed with it. Very solid and bargain for the money. I wish I bought the big box, but I am keeping it budget minded. The down side to that is I've pretty much filled this box up and will need another one at some point.