Hey mate, I'm in AU too. I think that buying the M50s at the moment is a bit of a waste since the LE version is more expensive for no apparently good reason.
You should be able to pick up a pair of the originals (when they return in stock) for $169. http://headphones.com.au/psingle?productID=319
I personally was tossing up between the M50, KRK 8400 and SRH-840. I listened to them all thoroughly on 2 separate occasions at a store here and much preferred the SRH-840s over the other 2 models. I highly recommend checking them out at a store and comparing them yourself. I don't deny that the M50 is build brilliantly because it really is, but I think the sound is far from neutral and unnatural in comparison to the SRH-840s.
If you want a great, neutral, crisp and tight sounding headphone with rich full mids, I highly recommend the SRH-840s. If you want something a little more HI-Fi and bassy sounding, the M50 would be good. No offense to anyone, but I hated the KRKs, the mids were just very wrong to my ears.
Also, although the SRH-840s are heavy, I personally find them extremely comfortable and wear them hours at a time. The earpads are way more comfy and accommodating (to big ears) compared to the M50s.
All the best
zambz
Edited by zambz - 1/22/12 at 7:11pm