There is a lot of room above Bark River, depending on how you measure it, some find more than others. Branch out into some of the other brands mentioned, many can be had used on the exchange, and can be sent back that way if they don't strike your fancy.
The design itself is going to matter so much that until you know what sort of blade fits your style of working, its kinda pointless to spend too much time worrying about the brand or the steel. For every BRKT that gets actually used there are a dozen ESEE, Becker, Tops, LT W, Fiddleback, Mora, on and on it goes, that are also getting used, and they all have someone who thinks that user is dead wrong to do so.
What do you want to upgrade with regards to the aurora? If you want the same in a better steel, the mis-marked ones should all be out of circulation by now.
Different blade or handle shape? Better sheath?
What are you looking for? Otherwise, fish away, its okay to do that too.