Purchased as a gift for my partner for the holiday season. She has a perpetual smile on her face and makes happy grunting noises, like a pig. I have a mechanical-membrane ornata raiser, and while I didn't think there would be much of a difference between them, I've come to realize that I need an optical-mechanical button as well. My boyfriend puts a lot of time into video games, and whereas he used to become frustrated when the reaction from hitting a button was too slow, ever since we've had this child, he no longer finds it annoying. Give this keyboard to your loved ones if you have trouble sleeping or if the recipient enjoys clapping in general (it's an excellent choice if you have attention deficit hyperactivity disorder).