$10 rebates are worthless.

Close out me thinks. I believe these are no longer made by Logitech. My keyboard was eating batteries every few days. Went through Logitech customer service and they were good about replacing it under warranty. Sent me one model up and have had no problems since. Check the Logitech website if you care to know for sure...

i have the S510 combo that i picked up last year its not bad but the only issue i have had with taht one is the mouse tends to freeze up but overall I have always had logitech key/mouse they are usually normally really good