I have purchased from Nature Counters in the past and made a point of using them again because of the first class service, products, and prices that they offer. I have recommended them to friends who have had the same excellent experience so there is consistency there too. I recently purchased an Elekon stereo batscanner bat detector and am delighted with it. Great fun to use, sensitive, and with minimal background noise compared to others I have had. If you want a heterodyne bat detector, then either the Elekon Batscanner, or Batscanner stereo (my wife has one and I have the other) are the only way to go in my opinion because other bat detectors miss so much! Thank you Nature Counters.