We don’t know how soon they will be out, so don’t return the 9040s until you have a replacement… Assuming you bought from Costco, there’s no problem in returning them and no reason to feel guilty. It’s their policy; you didn’t create it. “If FOR ANY REASON, you are dissatisfied . . .” If you return them any time within 6 months for any reason, they must honor their policy. They own it. In fact, you may want to buy the 9050s before you return the 9040s. That way you can have a direct comparison and keep the pair that works better for you.