Both Vodaphone globalstar dual mode sat/gsm
Ones a Ericsson R290 & the Other a Telit something or other (can't remember - it's in the glovebox of the work ute).
Both work OK.
Telit seems to hold battery charge longer - the Ericssons always in need of charging. For me - the Telit's menu system is more confusing.
I HAVE come across a couple occasions where I've been unable to hit a sattelite for no reason that I could fathom - and when I rang Voda - they had no idea either.
On subsequent days I've uplinked to sat from the same location no probs so - go figure.
Maybe the sattelite had all channels busy or something, just got a 'no service' display and I tried multiple times.
I still think they are prettty good and wouldn't be without one now.
1 year plan - $80 Pacific Pesos a month of which $47 is free calls, pays off the phone.
Calls (incomming and outgoing) are charged at $1.47 a minute).
Your costs I guess would be 61% of that - based on todays exchange rate.
Haven't used Iridium, and havent a clue how voda globalstar would work in your neck a the woods but they work OK upside down out to about 200 nm from shore.
Might find more details
Ericsson web site HERE
Cheers!