I agree that the SKB (all of 'em, actually) is flimsy. I'm talking to nycasecompany.com right now, they say no problem making something at the depth I want (~12 inches rackable would be perfect). I also found
these guys on eBay, theirs is 14" overall, and 12 1/2 rackable depth. I'm waiting to hear on the weight right now.
1/4" ply laminated with plastic is generally heavier than I'd prefer, since my QSC only weighs 13 pounds, and I'd like to reap some benefit from that. The SKB in my picture weighs 7 pounds, as a benchmark. I think it's actually stronger than the regular ('effects') SKBs, except for the back piece, which is a joke.