In response to the WoW logos on the headset, that's completely intentional. The headset was designed to be that way since it is an active collaboration between Creative Labs and Blizzard Entertainment. Blizzard's quality controls are always very strict and even the GUI for the Audio Panel was made to Blizzard's specifications.
I own this headset. Design wise, it wouldn't be my first choice. I think I get away with wearing them because I look young. But I think what it lack in design, it gains back with superior performance and comfort that make it a headset worth looking into (at least).
The wireless (which I have not found to actually interfere with any potential devices), detachable mic being able to work seamlessly on a Mac without customisation were firm sellers for me.
Other selling points which weren't mentioned in the review were:
Comfort. I have a small head, so in the past using other gaming headsets were often either very heavy or too loose to be very practical. The WoW headset is very light in construction, but also very flexible so it does fit to your own needs. Also the padding is light, airy and soft to the touch, when you wear it doesn't feel like you're wearing massive globes on your ears (mind, your ears do heat up a little)
Battery Life: If the lights aren't on all the time, the battery life is very decent. I can go for at least two days worth of gaming in WoW and not have it cut out on me.
Furthermore, the USB cord that's included is not that intrusive. The cord itself is braided, not plastic moulded, so it can stand a bit of punishment being toted around. Charge time is pretty good. I just leave it on overnight if I have to and disconnect the moment I want to use it and there's no disconnection of the sound whatsoever.
The volume buttons can be awkward at times, but apparently have innate resistance to prevent accidental pushing. They're just very hard to find when they are required. It just wouldn't do to use the feature when playing games, it takes a bit of time to find the buttons.
Sufficient noise cancelling: The mic is good for cancelling ambient sounds.
...and as far as I can tell, it cancels background noise to your ears very effectively. I've had a few people yell at me for seemingly ignoring them with my headset on.
Crisp voice output: Given if you change the audio settings for whatever is required of it, the headset offers a great quality of voice chat as well as audio.
About the price tag: For all you folks in the US, at least it's only $160USD. I live in New Zealand. I only recently saw the headset go just below $300NZD ($226.80USD). I don't regret purchasing it at all. Good audio headsets that have good all-round features are hard to find (especially where I live).