I've been using the EX-03 with my PS3 for over a month now. It's a great headset.
Setup is child's play, using it is even easier. The instructions are really straightforward.
Almost every function has a unique accompanying beep, from on/off to mute, volume and even low power. They are unobtrusive for the most part but the mute beep goes off every 5 seconds or so and it cancels any other ear output, so if a team mate is talking you may miss a word or two if your mic is muted. The low power beep kicks in when there's just a few minutes of charge left.
The design is sleek and comfortable but it is right-ear only, unlike previous EX headsets.
It's one of those headsets that you almost forget you're wearing. You get a good few hours play from a single charge and the mic is nice and clear. You will need to set the microphone volume to 4 or 5 in the PS3's 'audio device settings' menu to make sure you are heard, it's a bit quiet on the default level of 3 (most likely due to the 'noise cancelling' which should dull sounds that are further away from the mic)
Good value for the price, so it's a big 5 stars from me.