I am a huge fan of wireless input devices, and I have to say that this is the best I've used yet. The mouse gets great resolution and the keyboard keys are very easy to type on. All the shortcut keys are programmable and helpful. Working range is, I think, at least ten feet. I cannot get far enough away in my bedroom for the mouse to stop working. The only complaint is that the mouse drivers have gone nuts a few times while playing games, but I think that moving the receiver away from other electronics has solved that problem. I paid $50 for this set and I believe it to be well worth the money.After having the set for over 3 years, the mouse has started acting funny. It tends to click on occasions when I don't click, and not click when I do. I think it's just from the sheer amount of use it has seen. The keyboard continues to work flawlessly. I am moving my rating down to 4 stars because the mouse is approaching unusable.