City cases are nice, but almost as rare as unicorn farts. They seem to have a strong drive for freedom(I've lost two of them now) which is probably a leading reason for their scarcity. The latches don't hold them securely to the frame, even when they're locked. Mine are secured with straps now, and so far none have escaped.
I have looked at pelican cases, and while nice, they're eye-watering expensive. I have seen alternatives for a better price at Harbor Freight. It may bear looking into.