I have the G5 and I hated it for the first month or two. The weight cartridge is retarded, and the on the fly sensitivity really isnt needed at all. Id recommend getting MX518, theres no need to pay the extra money for the weights. I use to have like an early laser mouse from Microsoft, it was like the 6000 series I think but I really liked that mouse a lot, but now that Im use to the G5 I honestly think I like it more. The hell with wireless mice.
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