KB, all the Iridium messengers are just hardware wrapped around the same iridium data transceiver module.
The previous generation uses the
9602 SBD whilst the Inreach SE uses the newer
9603 SBD.
As far as I can tell they have pretty much the same specifications except the 9603 is a smaller, lighter unit.
One thing I read somewhere is that the older Inreach can determine its own GPS location but it can also get it from the GPS on the bluetooth-paired phone too.
I guess this would not happen with the SE if its not paired so less redundancy there (probably not an issue though in most situations).
Its pretty frustrating that the local distributors for Inreach are poorly priced.
If you are interested, maybe you could try your luck and get US device delivered to Oz. I got mine from rei.com but this was before they had an Oz distributor.
Could perhaps try using a Visa prepaid gift card (physical address doesnt matter) to initially register on a US plan.
Or if they dont allow AU prepaid credit cards,do you know someone in the US who could buy a US prepaid gift credit card and you could use that to initially subscribe.
No idea if this would work..just a suggestion. I find that when purchasing US-restricted stuff you just need to jump over the initial obstacle they put in front of you
and then they are more than happy to accept your money.