SKB roto-x are BY FAR the best for protecting your drums. The cardboard cases like the Econoline and Nomad cases only offer so much protection...more than bags, but less than plastic cases.
For me, I like the SKB cases because I needed cases that were stackable (and won't simply slide off of each other when wheeling them around), made of plastic (so they're more durable when being tossed around by bandmates while on tour, and also protected from the rain/puddles), and padded, but not with a foam padding that flakes off over time (Roto-X cases have a fabric lining OVER the foam to prevent the foam from flaking off). Heavy duty, and expensive, yes, but I got every single SKB case I have on the used market for about half off of the new price.