My biggest complaint has been the crappy zippers and foam handle pad that falls apart after about one week. The back kick plate has also given me some issues as far as durability. Other than that, I've had mine for 6 years and have had no other issues. It is extemely heavy, but I don't mind that if it makes it more durable. I'm not sure I would pay over $300 for the bag even if it had better zippers and a handle. I think I got my stealth 22' for around $250 and better zippers and a handle shouldn't cost alot of extra $$$.
There is no way I would pay $400 for a bag unless it came with a sherpa to haul it around for me.