Hi, the other units used for Skype are my husband's laptop and a smart phone. The smart phone has a fantastic reception with both sides receiving good picture and sound quality. My husband's laptop works as well as mine used to, with the sound quality pretty good and, being an older laptop, a separate camera (Logitec) plugged in. My daughter always downloads enhancements when prompted to do so, therefore her I-pad is up to date and she has no problems Skyping my other daughter. My laptop has the most up to date version of Skype as I recently deleted and re-loaded it from the Skype website as part of my own attempts to solve the problem.
The only other thing to mention is that, when I have the sound turned up to 100% on my laptop's speakers, I get a really loud feedback whistling noise. I don't know it this has anything to do with the mic problems. I am having to keep my speaker volume down at below 50% to stop the feedback.