you have a malfunctioning keyboard.
if ur so on about the media keys you can macro them aswell, like to ur numpad, or f9-f12 for example
i personally use it though im thinking about switching to a brown/black switch soon. waiting for the mionix z-60 to come out. the normal version is good priced, if you want backlighting your better off with going for an xarmor-u9bl. they cost about the same and the xarmor is way better built. i have heard some horror storys about the build quality of the razer blackwidow, though i havent experienced it myself(apart from the thing becoming dirty fast)
edit: oh and dont really compare it to any rubber dome keyboard. people may be like oh oh but g15 haz more macro keys o.0
its an mechanical keyboard, its a charm to type on if you have to type 5k-10k essays. it does it job at gaming.