I purchased a decent one from newegg. It's an A4tech, and it wasn't one of the cheap models, nor was it one of the expensive models they had. It was decent and i took the chance. It was my first wireless keyboard. It came with a wireless optical mouse. The thing has worked perfectly for 9 months now and i have no complaints whatsoever. It spans over 20 feet which is more than i need for my little office. It has great response... i never get interference from other objects in the room, and the best thing of all is that the transmitter that plugs into my pc also acts as a battery charger. The kit came with 6 batteries so i never run out. I've always got a fully charged set of batteries waiting and i don't have to go buy batteries all the time. Also, my batteries last about 2-3 weeks with very heavy use.
Thumbs up to A4tech for making a great wireless keyboard & mouse combo. I'd definitely buy more of these if i needed to.
I've also purchased a rosewill wireless combo for my wife but she doesn't like hers much. She hasn't had any function-related problems but she thinks its not as good as the one i have! Hers didn't come with a charger either, so she has to buy batteries every month or two.
The only \"intuitive\" interface is the nipple. After that, it\'s all learned. ;)