I have one of these in my mk5 (originally from a mk6) and it works great, but I don't have the additonal 'music' wire which means I can't use it to stream music.
Other than that though, it's a great hands-free kit which pauses / mutes music on my RNS510 whenever there is a voice command or incoming call, and the voice dial function works great.
Better than the last Parrot kit I owned