First impressions, after 5 years with the M525: silent and light, sits in the palm of your hand in much the same way. Pleasant to the touch, there is no rubberized “soft touch” coating on the case (subjectively). I connected to my unifying receiver without any problems (a regular radio whistle is included, to connect to it after unifying, you need to untie the mouse from the latter). An unpleasant surprise was jerky scrolling after installing Logitech Options (6.94.38 for os x 102022, scrolling may have been fixed in new versions). I had to delete it, but there is nothing to configure in the M330 except for the wheel. Bottom line: a great beautiful and quiet mouse for everyday use, not demanding on the quality of the surface. The "rattling left button" hasn't happened yet, and hopefully won't happen.
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