I am a firm believer that one cannot have too many camera cases and backpacks. And my studio storage areas reflect this.
Various carry and transportation needs combined with various volumes and weights of gear required mean a variety of case solutions are necessary. And not just and case will suffice. Because your camera, lens and other gear investment is significant, you need a trustworthy-quality carry solution.
Hard cases provide solid protection for impact and weather, but tend to be heavier and harder/less-comfortable to carry (though they often roll nicely). Backpacks allow large volumes of gear to be physically carried long distances in comfort. And more-compact shoulder/sling cases allow quick access to a camera and mounted lens.
Camera Bag, Backpack & Lens Case Reviews (Discontinued)