I'm using this one: http://www.logitech.com/en-us/product/8391 http://www.logitech.com/en-us/product/8391 The range ain't great, but it's enough. Combine it wi

I'm using this one: http://www.logitech.com/en-us/product/8391 http://www.logitech.com/en-us/product/8391 The range ain't great, but it's enough. Combine it with a laptop and good wifi, and I can go quite a ways.