Bests & Worsts Reviews from Amazon

First off, I have been a long time, loyal Logitech user. I have owned literally dozen of Logitech keyboards and mice. The reason I have stuck with Logitech is the quality. So, recently I bought a M720 / K850 combo set. I love the functionality and multi-device support, but as far as usability: These are the worst Logitech products I have ever owned. The M720 has MAJOR scrolling issues. When I am scrolling, in frictionless mode, which is the only mode I can stand to use, it quite often will scroll backwards up as mcu as half a page after I stop. Other times it will scroll forward a few lines after the wheels stops turning. Sometime I move the mouse and the scroll jumps all over the place. As a coder this is ANNOYING to say the least! It is to the point where I want to throw it through the wall. Unfortunately I am past my 30 return period... Now to the keyboard: It is better than the mouse, but I also have issues with the keyboard not typing the first few characters after I stop typing for a few minutes. I saw there was firmware upgrade what was supposed to fix it. It did not. This is REALLY annoying when you are on a login screen and end up mistyping the password because of this issue. Then to top it off, I contacted Logitech support over a week ago about these issue. No response other than the automated acknowledgement...