I am not a fan of Microsoft. Or at least, I think Micorsoft should only concentrate on designing Windows, and office. They should leave the internet for google, the gaming hardware for Sony, and the desktop sets for Logitech. Anyhow, they usually have competitive pricing so I get tempted and buy.
A couple of months ago, 9 to be accurate, I bought MS wireless ergonomic desktop 7000. Shown in the picture. The price was right and since at home I usually use the keyboard while on the couch, I needed something to well fit my position. I can say I am satisfied.