Haven't see any discussion of these models yet:

http://www.gme.net.au/epirb/mt410.php

The GME MT410G has just recently become available in Australia, you can get them for $589 (AUD), for comparison the ACR Aquafix is available at that price here too.

http://www.kti.com.au/minisat406gps.htm

The KTI Mini-Sat 406Mhz PLB is not yet available (awaiting regulatory approval). The inbuilt signaling mirror is an interesting addition.

Both of these models are significantly lighter than either the Aquafix or ResQFix. They're all different shapes so it's hard to tell how pocketable they would be from the overall dimensions.

It's great to see some competition in the market for compact, light PLB's. I'll probably wind up getting the GME, will post photos & impressions if I do.