If you already own something, it is quite a different matter from choosing between things that you don't yet own. With receivers, in general, if you do not need to replace it, you ought not replace it. This is because, eventually, you will need to replace it, and then you will get the latest features available at that time, which will not have been available earlier. So put it off as long as reasonably possible, and you will get more for your money than if you are quick to replace it.