Summary: I have gone through several different wireless keyboards and every single one had the same exact problem, and that was sticky, hard to hit keys that would double up on letters sometimes or not even post the letter at all.
Summary: I deducted one star for the keyboard being a bit small and the standard layout being adjusted to allow for this. The delete and insert keys are in an odd spot so it takes some getting used to but I was pleasantly surprised when the keyboard and mouse both arrived with batteries, ready to go.
Summary: I have been a big fan of Logitech products and when it came time to replace my mouse I was unable to as the "transmitter" for that model was not adaptable to the newer versions. I researched buying a new keyboard and mouse combination, but did not want to wait for one to come in the mail.
Summary: We wanted a keyboard for a compact keyboard drawer. This one is perfect. The layout is close enough to a full-size keyboard that it didn't cause any frustrating "why-did-they-put-that-key-there?" experiences. The mouse is similarly compact without being overly-small.