Negative Positive
Title: You're not paying for durability.
Review: I want to and should be able to love this trackball: right size, right feel (though the scroll ring feels coarse and cheap), right usability, excellent tactility, great software.But the deal-breaker on this trackball is its utterly lacking durability. I am on my 4th replacement from Kensington in a year now. In all cases, clockwise scroll ring rotation and primary button clicks became erratic. Kensington dutifully sent a replacement unit every time while under warranty, but now that warranty period is over and I again have a barely-usable device. Note that I'm not a gamer, nor have I subjected this device to any other "hard" usage.Kensington charges too much for something that is clearly not meant to last. I am now looking to Logitech and lesser-known "ergonomic specialist" brands for my trackball needs.
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