For backups I've got some cheapy $20 Wal-Mart soft cases, I've got a decent double gun aluminum hard case.
The one I use more than any is a Redhead (Bass Pro) heavy duty canvas quality padded soft case. I'm pretty sure Boyt made it, as the stitching, zippers, grommets, etc are all identical. It was $100 or so, but they had their 'soft' cases on sale at 50% off in a flyer one day. I got 3 of them, but they didn't ring up as half off. The flyer was intending on it being the promotional cases only. Quick talk to the manager and he confirmed that it really was a soft case so I got the deal.
One of my hunting buddies shoots both a Browning Citori and a Beretta 391. He insists on bringing them in the factory hard cases, so the guns are always unassembled. What a pain in the butt. For Christmas, I'm getting him a good soft case so he can come to the field with his guns put together.