I appreciate anyone's thoughts. I am not quite ready to give up a home telephone and need to buy a new set of cordless phones. I only use it about once a day for family/friend calls, so the quality need not be perfect. Most important to me is that I don't hear wireless router interference or cause interference to my wireless router. (Incidentally, the houses in our neighborhood are VERY close together here, so other routers will always be around me.) Should I get 2.4 ghz, 5.8 ghz, 6.0 ghz or 900 mhz? Thank you very much for your thoughts.