I have been using Logitech trackballs for many years. Several pieces of the previous model M570 were "worn out", which stably doubled clicks once a year and a half (this is their well-known disease). MxErgo has been in use since November 2022, it works like clockwork, apparently Logitech began to use a different model of switches without this problem. As a drawback, I will single out only the mouse cover made of soft-touch rubber. Due to constant contact with the palm (and this is sweat, etc.), the coating begins to peel off and the appearance of the mouse is lost.
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