Get the proper PS3 one. Think they're about 20 in Tesco or 12 on Amazon. Top notch.
Just make sure when u set up that BOTH the audio device and bluetooth device sub menus are seeing the headset. Know a few people (myself included) that only had the one 'ticked' and got a bit frustrated with their 'faulty' headset !!!
Can you put a link up please.