I chose for a long time and, after reading all 9 reviews on the Market, forked out for 3200. I was on sale in only two places, so there was not much choice. Since it is used together with the ms keyboard 4000 keyboard, it turned out to be inconvenient to work with the right hand (the right part of this keyboard is longer than the left). I tried to rearrange the trackball to the left side - the flight is normal. In general, a handy useful thing. Maybe buy a second one for work or think about a four-key one, but the toad is choking.
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