A lot of headsets still don't work with the PS3. I had to find out the hard way. Worst thing about buying a headset that can't connect to your PS3 is the fact that you can't return it (Circuit City and Future Shop don't let you return opened headsets). I bought a total of 3 headsets for my PS3, 2 of which were not compatible with the console. Ended up giving them away to family members.
I bought a Jabra when I was in Italy a few years ago (same one that comes with Warhawk), and I would NOT recommend it. It's incredibly quiet (to the point where I have to nearly mute the actual game to understand what people are saying) and it's not very comfortable. No "extra features" either. I regret buying it.
So, given what I've said above, I think your safest bet would be to get the official headset. No worries about compatibility issues, knowledge of the fact that it'll be supported by Sony for years to come, and a lot of cool features like a docking station, being able to use it on your computer while it's charging, etc.