I keep my gear in Pelican Storm hard cases. Roofs leak, pipes burst, toddlers make mischief, etc. Having the gear in a hard case gives me some piece of mind. I also put desiccant packs in there to keep the humidity low.
I have a small case (im2075) for body + 24-70 II (easy access), a medium case (im2300) for commonly used lenses, a large case (im2720) for less commonly used lenses, including a 600 II, and an airline carry-on case (im2500) where I store my flashes, radio triggers, filters, etc.
The various bags that I have are all stpored in the closet empty, so I can grab wuat I need and put it in the appropriate bag for a given outing.
I do have a few cases…