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I have always used a standard mouse rather than the built in touch-pad with any laptop I have owned. I find the mice far more user-friendly and intuitive. The same cannot be said of touch-pads of whichever brand of laptop. When my old Trust (wired) mouse started getting temperamental, I bought myself the Gigabyte M7800E Wireless Mouse.
__Plug and Play__
The Gigabyte M7800E Wireless Mouse is a small compact device powered using two AAA batteries. It comes with a tiny USB receiver which has to be inserted in one of your laptop's USB drives for the mouse to be detected. With a Windows 7 or 8 computer, this is detected automatically and drivers are automatically installed without you having to do anything. It takes less than one minute from inserting the receiver (and turning your mouse on) for it to start working. A true plug and play device. The batteries are claimed to last several months.
The mouse will fit even in a small hand, allowing you to operate the buttons seamlessly. The coating on the surface allows for an easy grip unlike some mice which can be smooth and slippery. The three buttons perform the standard functions associated with left and right clicks respectively as well as the central scroll button. However, this mouse has some hidden tricks up its sleeve. You can, in fact, adjust the DPI sensitivity to suit you by simultaneously pressing the right and scroll buttons for a few seconds. You can programme the buttons to do other functions as per your needs. A friend of mine is left-handed and I was pleasantly surprised to see that she could use it just as easily as me (right-handed) and I think this is thanks to its symmetrical build.
The receiver, dubbed 'Ultra Nano' is so small that, once you have plugged it into your laptop, you are unlikely to need to remove it again. The bit that sticks out is so small, it is almost flush. If, for whatever, reason you need to unplug the receiver, this can be housed in the mouse itself so there is little risk of it getting lost.
In the couple of months that I have been using this, I have had no issues whatsoever with sensitivity. It picks up effortlessly at whatever angle I might be. Even distance isn't an issue. In situations where I connect the laptop to my TV to use the latter as a large screen (for watching a movie, for instance), I use the mouse from several metres away and it takes that in its stride without breaking a sweat. Overall, very pleased with the little device.