Well, Microsoft just came out with their Wireless Desktop Elite. And boy to I have to tell you, it is the best (in my opinion). I have tried several models already:
Gyration Ultra Suite
IBM Wireless Navigator Pro
Microsoft Bluetooth
... and none have satisfied me until now. And the Microsoft Elite blows the Logitech MX Duo in the water. Check out the website at:
microsoft.com/hardware/mouseandkeyboard/productdetails.aspx?pid=016
Ok, you get the most keys of any wireless out there. There are many innovations including a HORIZONTAL scrolling function built-in to both the mouse itself AND the keyboard, and this functions well and is also customizable. Everything is right were you need it, the "Media Center" is directly in the middle.
And the most innovative feature I've seen yet is the "Favorites" hot keys. You can have 5 Favorites programmed into the keyboard (#'s 1-5). Simply press "Show Favorites" (this is directly below "My Favorites") and the software will come up with a menu and you just enter anything you want in there, be it a web address or otherwise. Then simply hit your "hot key" and you're off and running.
Microsoft also built a simulated leather pad BUILT-IN to the keyboard, a nice feature that makes using the keyboard VERY comfortable. Lastly, the keyboard construction is of very high quality, unlike many of Microsoft's previous-generation products.
The mouse works well, and is very comfortable as well with new indentations for your fingers. Being this is wireless, expect some lag when the mouse has not been used for about a minute or so. This is UNLIKE the lag of the previous-generation Wireless Intellimouse where it was slow to respond to initial movements even after being used just seconds before. And this new mouse is also UNLIKE the lag that you may experience with even the Microsoft Bluetooth, because the Bluetooth will go into a bit of a sleep mode, and then you will have to wait a couple seconds for the light to blink and respond, at which time it plays "catch-up" so it attempts not to lose any of your data or movements. That being said, expect the latest generation mouse (the Wireless Intellimouse 2.0) to give excellent performance, especially for wireless technology.
As far as reception goes, Microsoft claims 6 feet range, but don't expect it to go beyond that. For those with the typical HTPC setup, I would recommend locating your receiver relatively close to the keyboard/mouse, even if that means moving it to a nearby wall. This was such the case in my situation.
I would HIGHLY recommend this keyboard and mouse suite to ANYONE who is going the HTPC route or anyone who wants a high quality mouse and keyboard that offers mobility. Go for it!!! You can get it for around $99.99!