I have three boxes that I use.
One is my starter box, it has fuel, 12v battery, starter, fuel pump, and power panel. It is compact and easy to carry. Most of the time it is the only one of the three that gets unloaded from the truck.
Two is a plain Jane single compartment plastic tool box aprox 12Wx18Lx10H, it has 12v battery and field charger mounted in it and my supply of props live there.
Three is a fairly large tackle box, it has the tools and a good supply of hardware and other stuff in it, it is heavy.
Each one serves a specific purpose and is only hauled out when needed.
I have considered the big box on wheels but it would not fit in the truck with a full load of planes.
Obviously one size does not fit all, I have seen people that bring nothing but the minimum to fly one plane and I have seen people that bring a trailor fully loaded. For me I try to bring enough stuff to do minor repairs and enough planes to survive at least one disaster because of the distance to the field.