Between lots of mini keyboards on the Internet I picked this one because the size and arrangement of keyboard and touchpad seemed more practical and I was right, I can type with two thumbs and touchpad is not in my way.
Happy with quality, size and performance. I started using it few days ago and I had no issue so far. I've not tried the maximum rang, but it covers my need (4 - 5 meters between TV and sofa in my case)
Thanks to the seller, the delivery was on time with good packaging (including USB dongle, mini keyboard/touchpad, booklet, CD and battery) you don't need to install the software to use regular keyboard and touchpad functionality, but to use extended features like multi-touch features you have to install it.
I recommend it for your HTPC and similar uses.