Copper is pretty hard on his stuffed toys as well. He likes to trash them about shaking them until they "die". I then preform surgery depending on the severity of the trauma... LOL.
One of the local pet stores here sells stuffed toys that look like real rabbits and those are his favorite as are the Loofa dogs. The Rabbits will last a little while (3 or 4 months). We don't get the Loofa dogs very often, they just are durable enough. I don't like to pay $7-$8 for a toy that he is only going to play with twice before I have to pick up the stuffing. Usually there isn't any repairing them either. Their fur is just too thin.