I don't have one, but the build quality of the rosewill should be pretty good (I believe it is costar made, like filco). I have heard, however, that some have had issues with the USB port on it..?
Either way, you can use a utility called "Autohotkey" to map keys to media functions. I don't use it, so I don't have the scripts, but they do exist, and I imagine, wouldn't be too hard to find. There is a "share you AHK scrips" topic here on GH that is a good starting point.