I was given mine second hand. At the time i was new to wireless and somehow found it very troublesome. I really don't know how I managed to struggle with it. Now I wander around the room with it, I havent thought about the range in a long time. The keyboard works from the kitchen if you aim it at the mirror. The mouse doesn't. One make up for the other!
Its durable too, Im not very kind to my 'bits', the keyboard has been dropped and fed and watered. more regularly than it should have.
I think I take mine for granted. Which is surely a great compliment.
It no longer has clear marking on the keyboard in places. Every once in a while the 8 on the num pad sticks a little. The volume knob comes off in your hand. But that took a few years of carelessness to achieve.
I really never thought about recommending my mouse/keyboard combo to anyone. But I have three dead keyboards in the cupboard. This has outlived all of them and, touch wood, it shows no sign of breaking down yet.
Thats everything you can want in a keyboard and mouse. To be so good you don't notice it as an object anymore. Well Done Belkin.