they look awesome, I've used creative sound cards and surround sound gaming computer speakers in the past which have been very good. The place a lot of people love to use noise cancelling headphones is on a plane so don't forget to grab a plane headphone adaptor you can pick them up at Dick Smith for about $5:
Buy Audio Adaptor 2 x 3.5mm Plug - 3.5mm Stereo Socket | Read Reviews | Dick Smith Online Shopping
This audio/visual plug is a 2x 3.5mm Plug – 3.5mm Stereo Socket. Gold plated and offers low input loss and low resistance. Used in home entertainment, hobby and professional audio environment, offering quality audio signal distribution.
Or buy online from fishpond for just $4.53:
Airline Headphone Adapter - Shop Online in Australia - Fishpond.com.au
Enjoy in-flight entertainment on your own personal headphones. No need to use airline issued low quality "used" headphones. This adapter converts the dual prong plug to a standard 3.5mm stereo jack for use with any standard or noise cancelling headphones.
More about the: Creative Aurvana X-Fi Noise Cancelling Headphones
Exceptionally quiet with unmatched natural performance
Introducing the Creative Aurvana X-Fi® headphones, the world's first noise-canceling headphones equipped with X-Fi technology. The noise-cancellation feature lets you enjoy your music without unnecessary distractions and together with the X-Fi technology, gets you set for more thrilling tunes. Change the way you listen to your music, movies and games with the Aurvana X-Fi today.
X-Fi Xtreme Fidelity
X-Fi technology breathes life into your songs by restoring detail and expanding your music and movies to surround sound.
Hear every detail
X-Fi Crystalizer® technology restores the detail and vibrancy to your compressed music and movies. All the highs and lows are intelligently enhanced, ensuring you hear everything in crystal clear clarity.
X-Fi CMSS-3D® technology expands your stereo MP3s and digital movies into virtual surround sound over the headphones. Voices are centered in front of you and ambient sounds are moved all around you.
Experience no disturbance
The noise-cancellation technology significantly reduces background and environment noise by up to 90 per cent. Get to enjoy undisturbed music wherever you are. You can even detach the audio cable and continue using the headphones to block out noise while you sleep.
Performance audio drivers
Large 40mm Neodymium drivers are acoustically-tuned to produce an accurate and linear response, be it for music or movie enjoyment. Now you can achieve natural and dynamic sound reproduction easily.
Listen to it anywhere
With its wide range of bundled accessories, you can now connect your headphones to the seat socket of the airplane, your home entertainment system, MP3 players, iPod® and even the iPhone™.
No worries on where to keep your headphones. You can easily place them and all the bundled accessories into the included travel case and bring it along with you wherever you go!