SIIG JK-WR0412-S1 Black 81 Normal Keys 14 Function Keys USB RF Wireless Mini Multimedia Keyboard

Pros: Lightweight, exceptional battery life, exceptional ergonomic fit. Highly intuitive control layout for mouse functions -- better than any of the others.

Cons: Very low RF output -- I got the best connection when I plugged the USB receiver standing straight up (in a small usb dock) and is line-of-sight visible. Problem solved.

No back-light. HTPC kbs should all have a back-light option
(I know: it's not advertised as an HTPC kb. I know!)

Occasional missed keys.

Would be nice to be able to map my own keys.

Trackball is reportedly not silky smooth out of the box, this is true, but if you want a decent KB for HTPC control, then not a real problem and it smooths out the longer you use it. If you are want a wireless KB to run Photoshop or type up your blog, I suggest you try another.

Overall Review: Several people report that this kb boots in numlock mode -- this is a windows problem, not your KB. It's also more than a little annoying and you can't fix it in the BIOS: search online for 'numlock on boot in windows registry' to fix it. I did, worked great.

Jerky media volume control problem: this seems to be is a symptom of the WinLIRC command set and its interface in Windows Media Center. The media keys (vol). control the OS volume -- many programs have their own control on TOP of that. I gave up on WMC and went back to BSPlayer, and surprise, no more Vol control issues so the problem is not the kb alone.

I would definitely buy this kb again and am thinking of picking up a spare in case I break it.

Beware: it's branded under a dozen names, pick one from your most trusted website and look for the longest warranty. The SIIG here on NE has a 3 yr warranty; the same kb branded Adesso (also on NE) is 10$ more and 2 yrs less.

Pros: Very good design that fits perfectly on my hand. 3 year warranty.

Cons: Although design was good, build quality was poor. Comparable to $5 keyboard.

Plastic covers have sharp and rough edges. Ball for track ball had a bump and does not roll smoothly. Keys required more pressure than usual keyboard.

Right click button on top of track ball did not work unless I press it hard (bad switch?)

Overall Review: It would been a great keyboard if it was built with some quality. Returned after trying for few hours.
Price tag is very high considering its build quality.