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Title: Middle button very stiff - returned
Review: This is a well-manufactured mouse, but if you use the middle button a lot, forget it. It's much stiffer than the middle button on Logitech's other mice and may give you a bruise if you try to use it too much.Also, the acceleration was very different from most mice. It can undoubtedly be adjusted in software preferences, but I fail to see the justification for a mouse that doesn't work out of the box these days.After trying this mouse for a couple of hours I returned it and got myself a trusty MX-310. No surprises there, just a good mouse.
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