So what is it about the Enhance Select 700 aids that makes them 200 better than the Select 500? The big sell is a new audio feature called SoundScape Auto Focus. I struggled a bit with Auto Focus when I first started using the Enhance Select 700, as I had trouble hearing my wife in a restaurant playing loudish music over the PA—exactly the scenario Auto Focus was designed for. The bottom line is that if you’re happy with your Enhance Select 500 (or 300), there is absolutely no need to rush to upgrade to the Select 700. For that reason, the Jabra Enhance Select 300 remains my top pick for over-the-counter hearing aids, with the 700 making for a compelling product if price is no object.