I'm very happy with the Calton I bought from Keith in the UK. Additionally I use a Colorado case cover that is very useful as it means I can use plastic cable ties around the zips of the case cover and the Calton's handle that prevents unauthorised folks from easily opening the case. The TSA folks often inspect the contents but always replace the cable ties.

I have a Hiscox too. It's OK for putting in the back of the van but I'd certainly never dream of flying with it.