For heavier weight hardware, I recommend one of these:
This holds a lot. It's nearly 32 inches wide, so it can fit most longer pieces of your kit (hi hat base etc) and around 14 inches deep.. Just combine it with one of these mover's dolly's from Harbor Freight and you are good to go. This is also similar to what doggyd suggested above, but more affordable.
Amazing deals on this 30In X 18In 1000Lb Wood Dolly at Harbor Freight. Quality tools & low prices.
www.harborfreight.com
The container is made of rugged plastic, so it is very light when empty. The latches aren't great, but I would use a large carabiner clip in the center hole (where the padlock is designed to go), so if the latches ever fail (or get caught on a doorway, car door etc), the lid will remain closed. Best of all, they come in a variety of colors (used to be black only). The other nice thing about a "hard" hardware case is that the hardware stays "in it's space" when you lift or move it. In a bag, the hardware shifts as soon as you move it or pick it up and makes it even more awkward to carry or load (even shifting WHILE you are carrying it, climbing stairs etc). .
It will be very heavy when full, thus the dolly. The dolly easily stacks (wheels up) on top of it and/or other equipment in your vehicle. Also, when the case is on the dolly, you can stack other drums and equipment on top of it and use it as a hand truck. You can also buy a (sold seperatley) handle attachment for the dolly if you choose. All this at a about a third of the cost of a "real" hardware case. I've had mine for years and it's still going strong. Granted, I take care of it and don't abuse it (don't throw stands in it or throw it in a van or truck etc), but I haven't had any issues with breakage or wear (even the latches still work).